{ diff(x1, t) = (1*k4*x4 + (-1)*k6*x1 + (-1)*(k25*x1*x2 - k26*x3))/k2,
  diff(x2, t) = (-1)*(k25*x1*x2 - k26*x3)/k2,
  diff(x3, t) = ((-1)*k15*x3 + 1*(k25*x1*x2 - k26*x3) + (-1)*k27*x3*x6)/k2,
  diff(x4, t) = ((-1)*k4*x4 + 1*k5)/k1,
  diff(x5, t) = (1*(k7 - k8*x5) + (-1)*k28*x5*x7*x9 + 1*k30*x11 + (-1)*k41*x5*x7*x20 + (-1)*k105*x5*x42)/k1,
  diff(x6, t) = (1*(k9 - k10*x6) + (-1)*k27*x3*x6)/k1,
  diff(x7, t) = (1*(k11 - k12*x7) + (-1)*k28*x5*x7*x9 + 1*k30*x11 + (-1)*k41*x5*x7*x20 + 1*k66*x10*x24)/k1,
  diff(x8, t) = (1*(k13 - k14*x8) + (-2)*k31*x8^2*x12)/k1,
  diff(x9, t) = ((-1)*k16*x9 + 1*k27*x3*x6 + (-1)*k28*x5*x7*x9 + 1*k66*x10*x24)/k1,
  diff(x10, t) = ((-1)*k17*x10 + 1*k28*x5*x7*x9 + (-1)*k29*x10 + (-1)*k66*x10*x24)/k1,
  diff(x11, t) = (1*k29*x10 + (-1)*k30*x11)/k1,
  diff(x12, t) = (1*k30*x11 + (-1)*k31*x8^2*x12)/k1,
  diff(x13, t) = (1*k31*x8^2*x12 + (-1)*k32*x13)/k1,
  diff(x14, t) = ((-1)*k18*x14 + 1*k32*x13 + (-1)*k33*x14*x15 + (-1)*k35*x14*x38 + 1*k37*x19 + 1*k40*x20)/k1,
  diff(x15, t) = ((-1)*k33*x14*x15 + (-1)*k34*x15*x16 + (-1)*k38*x15*x17 + 1*(k47 - k48*x15) + 1*k81*x35 + (-1)*k106*x15*x42)/k1,
  diff(x16, t) = ((-1)*k19*x16 + 1*k33*x14*x15 + (-1)*k34*x15*x16 + (-1)*k39*x16*x38)/k1,
  diff(x17, t) = ((-1)*k21*x17 + 1*k35*x14*x38 + (-1)*k36*x17*x38 + (-1)*k38*x15*x17)/k1,
  diff(x18, t) = ((-1)*k20*x18 + 1*k34*x15*x16)/k1,
  diff(x19, t) = ((-1)*k22*x19 + 1*k36*x17*x38 + (-1)*k37*x19)/k1,
  diff(x20, t) = ((-1)*k23*x20 + 1*k38*x15*x17 + 1*k39*x16*x38 + (-1)*k40*x20 + (-1)*k41*x5*x7*x20)/k1,
  diff(x21, t) = ((-1)*k24*x21 + 1*k41*x5*x7*x20)/k1,
  diff(x22, t) = ((-1)*k42*x21*x22 + 1*(k43 - k44*x22) + (-1)*k64*x10*x22 + 1*k65*x23)/k1,
  diff(x23, t) = (1*k42*x21*x22 + (-1)*k53*x23 + 1*k64*x10*x22 + (-1)*k65*x23)/k1,
  diff(x24, t) = (1*(k51 - k52*x24) + 1*k77*x32)/k1,
  diff(x25, t) = (1*(k45 - k46*x25) + (-1)*k67*x25*x26 + 1*k68*x23*x27 + (-1)*k69*x25)/k1,
  diff(x26, t) = ((-1)*k57*x26 + (-1)*k67*x25*x26 + 1*k71*x33 + (-1)*(k72*x26 - k73*x30))/k1,
  diff(x27, t) = ((-1)*k54*x27 + 1*k67*x25*x26 + (-1)*k68*x23*x27 + 1*k75*x31)/k1,
  diff(x28, t) = ((-1)*k60*x28 + 1*k68*x23*x27)/k1,
  diff(x29, t) = ((-1)*k55*x29 + 1*k69*x25 + (-1)*k74*x29*x30)/k3,
  diff(x30, t) = ((-1)*k58*x30 + 1*(k72*x26 - k73*x30) + (-1)*k74*x29*x30)/k3,
  diff(x31, t) = ((-1)*k59*x31 + 1*k74*x29*x30 + (-1)*k75*x31)/k3,
  diff(x32, t) = ((-1)*k61*x32 + 1*k76*x29)/k3,
  diff(x33, t) = ((-1)*k56*x33 + 1*k70*x29)/k3,
  diff(x34, t) = ((-1)*k62*x34 + 1*k78*x29)/k3,
  diff(x35, t) = ((-1)*k63*x35 + 1*k80*x29)/k3,
  diff(x36, t) = (1*(k92 - k93*x36) + (-1)*(k108*x36*x41 - k109*x44))/k1,
  diff(x37, t) = (1*(k49 - k50*x37) + 1*k79*x34 + (-1)*(k101*x37*x42 - k102*x45) + (-1)*k103*x37*x42 + 1*k104*x45)/k1,
  diff(x38, t) = ((-1)*k35*x14*x38 + (-1)*k36*x17*x38 + (-1)*k39*x16*x38 + 1*(k82 - k83*x38) + (-1)*k100*x38*x43)/k1,
  diff(x39, t) = (1*(k84 - k85*x39) + (-1)*k98*x39*x41)/k1,
  diff(x40, t) = (1*(k86 - k87*x40) + (-1)*k99*x40*x42)/k1,
  diff(x41, t) = (1*k37*x19 + 1*k40*x20 + (-1)*k88*x41 + 1*k100*x38*x43 + (-1)*(k108*x36*x41 - k109*x44))/k1,
  diff(x42, t) = ((-1)*k89*x42 + 1*k98*x39*x41 + (-1)*(k101*x37*x42 - k102*x45))/k1,
  diff(x43, t) = ((-1)*k90*x43 + 1*k99*x40*x42)/k1,
  diff(x44, t) = ((-1)*k94*x44 + 1*(k108*x36*x41 - k109*x44))/k1,
  diff(x45, t) = ((-1)*k91*x45 + 1*(k101*x37*x42 - k102*x45) + (-1)*k104*x45)/k1,
  diff(x46, t) = ((-1)*(k95*x46 - k96) + (-1)*k107*x42*x46)/k1,
  diff(x47, t) = ((-1)*k97*x47 + 1*k107*x42*x46)/k1 }