{ diff(x1, t) = 0/k57,
  diff(x2, t) = (-1)*(k26/(k29*k28)*x24*x21*x2 - k27/k28*x24*x23)/(1 + x21/k29 + x2/k29 + x21*x2/(k29*k28) + x23/k28)/k57,
  diff(x3, t) = ((-1)*x8*(k6/k7*x3 - k8/k9*x7)/(1 + x3/k7 + x7/k9) + (-1)*(k42/(k45*k44)*x1*x3*x23 - k43/k44*x1*x31)/(1 + x3/k45 + x23/k45 + x3*x23/(k45*k44) + x31/k44))/k57,
  diff(x4, t) = ((-1)*x36*(k1*x4/k2 - k3*x5/k4*x28/k5)/(x4/k2 + (1 + x5/k4)*(1 + x28/k5)) + 1*x6*(k33*x26/k34 - k35*x27/k36*x4/k37)/(x26/k34 + (1 + x27/k36)*(1 + x4/k37)) + 1*x6*(k46*x31/k47 - k48*x22/k49*x4/k50)/(x31/k47 + (1 + x22/k49)*(1 + x4/k50)))/k58,
  diff(x5, t) = 1*x36*(k1*x4/k2 - k3*x5/k4*x28/k5)/(x4/k2 + (1 + x5/k4)*(1 + x28/k5))/k58,
  diff(x6, t) = 0/k58,
  diff(x7, t) = 1*x8*(k6/k7*x3 - k8/k9*x7)/(1 + x3/k7 + x7/k9)/k57,
  diff(x8, t) = 0/k57,
  diff(x9, t) = (-1)*x30*(k38/k39*x9 - k40/k41*x29)/(1 + x9/k39 + x29/k41)/k58,
  diff(x10, t) = (-1)*(k18*x15*x11*x10*x14 - k19*x16)/k59,
  diff(x11, t) = (1*x15*(k13*x13/k14 - k15*x11/k16*x12/k17)/(x13/k14 + (1 + x11/k16)*(1 + x12/k17)) + (-1)*(k18*x15*x11*x10*x14 - k19*x16))/k59,
  diff(x12, t) = 1*x15*(k13*x13/k14 - k15*x11/k16*x12/k17)/(x13/k14 + (1 + x11/k16)*(1 + x12/k17))/k59,
  diff(x13, t) = ((-1)*k51*x13 + (-1)*x15*(k13*x13/k14 - k15*x11/k16*x12/k17)/(x13/k14 + (1 + x11/k16)*(1 + x12/k17)))/k59,
  diff(x14, t) = (-1)*(k18*x15*x11*x10*x14 - k19*x16)/k59,
  diff(x15, t) = (1*k12/(k12 + x9)*(k10*x28 - k11*x15) + (-1)*(k18*x15*x11*x10*x14 - k19*x16) + (-1)*(k20/(k23*k22)*x18*x15*x19 - k21/k22*x18*x17)/(1 + x15/k23 + x19/k23 + x15*x19/(k23*k22) + x17/k22))/k59,
  diff(x16, t) = ((-1)*(k52*x16 - k53*x32) + 1*(k18*x15*x11*x10*x14 - k19*x16))/k59,
  diff(x17, t) = (1*(k20/(k23*k22)*x18*x15*x19 - k21/k22*x18*x17)/(1 + x15/k23 + x19/k23 + x15*x19/(k23*k22) + x17/k22) + (-1)*(k24*x17 - k25*x20))/k59,
  diff(x18, t) = 0/k59,
  diff(x19, t) = (-1)*(k20/(k23*k22)*x18*x15*x19 - k21/k22*x18*x17)/(1 + x15/k23 + x19/k23 + x15*x19/(k23*k22) + x17/k22)/k59,
  diff(x20, t) = 1*(k24*x17 - k25*x20)/k59,
  diff(x21, t) = (-1)*(k26/(k29*k28)*x24*x21*x2 - k27/k28*x24*x23)/(1 + x21/k29 + x2/k29 + x21*x2/(k29*k28) + x23/k28)/k58,
  diff(x22, t) = 1*x6*(k46*x31/k47 - k48*x22/k49*x4/k50)/(x31/k47 + (1 + x22/k49)*(1 + x4/k50))/k57,
  diff(x23, t) = (1*(k26/(k29*k28)*x24*x21*x2 - k27/k28*x24*x23)/(1 + x21/k29 + x2/k29 + x21*x2/(k29*k28) + x23/k28) + (-1)*k32/(k32 + x1)*(k30*x23*x25 - k31*x26) + (-1)*(k42/(k45*k44)*x1*x3*x23 - k43/k44*x1*x31)/(1 + x3/k45 + x23/k45 + x3*x23/(k45*k44) + x31/k44))/k58,
  diff(x24, t) = 0/k57,
  diff(x25, t) = (-1)*k32/(k32 + x1)*(k30*x23*x25 - k31*x26)/k57,
  diff(x26, t) = (1*k32/(k32 + x1)*(k30*x23*x25 - k31*x26) + (-1)*x6*(k33*x26/k34 - k35*x27/k36*x4/k37)/(x26/k34 + (1 + x27/k36)*(1 + x4/k37)))/k58,
  diff(x27, t) = 1*x6*(k33*x26/k34 - k35*x27/k36*x4/k37)/(x26/k34 + (1 + x27/k36)*(1 + x4/k37))/k57,
  diff(x28, t) = (1*x36*(k1*x4/k2 - k3*x5/k4*x28/k5)/(x4/k2 + (1 + x5/k4)*(1 + x28/k5)) + (-1)*k12/(k12 + x9)*(k10*x28 - k11*x15))/k58,
  diff(x29, t) = 1*x30*(k38/k39*x9 - k40/k41*x29)/(1 + x9/k39 + x29/k41)/k58,
  diff(x30, t) = 0/k58,
  diff(x31, t) = (1*(k42/(k45*k44)*x1*x3*x23 - k43/k44*x1*x31)/(1 + x3/k45 + x23/k45 + x3*x23/(k45*k44) + x31/k44) + (-1)*x6*(k46*x31/k47 - k48*x22/k49*x4/k50)/(x31/k47 + (1 + x22/k49)*(1 + x4/k50)))/k58,
  diff(x32, t) = (1*k51*x13 + 1*(k52*x16 - k53*x32))/k59,
  diff(x33, t) = (-1)*k56/(k56 + x35)*(k54*x33*x34 - k55*x36)/k57,
  diff(x34, t) = (-1)*k56/(k56 + x35)*(k54*x33*x34 - k55*x36)/k57,
  diff(x35, t) = 0/k57,
  diff(x36, t) = 1*k56/(k56 + x35)*(k54*x33*x34 - k55*x36)/k57 }