{ diff(x1, t) = 0,
  diff(x3, t) = 0,
  diff(x5, t) = (1*k69*k37*x27/k67*x6/k69/(k38 + x6/k69) + (-1)*k64*k19*x24/k64*(x5/k64*x11/k64 - x10/k64*x12/k64/k20)/(k23*x5/k64 + k22*x11/k64 + x5/k64*x11/k64 + k22*k27/(k21*k28)*(k24*x10/k64*(1 + x5/k64/k26) + k21*x12/k64*(1 + x11/k64/k27) + x10/k64*x12/k64)))/k64,
  diff(x6, t) = (146199/50*k69*k45*x21/k69*(k4*(k3*x2/k69 + x4/k69) - (x6/k69*k10)^2/k44)/(k6*(k4*(k3*x2/k69 + x4/k69) + k41*(1 + (x6/k69*k10)^2/k43))) + 146199/50*k69*k46*x21/k69*x8/k69*k8/(k6*(x8/k69*k8 + k42)) + (-1)*k69*k37*x27/k67*x6/k69/(k38 + x6/k69))/k69,
  diff(x7, t) = (198413/100*k69*k45*x21/k69*k5*(k3*x2/k69 + x4/k69)/(k6*(k5*(k3*x2/k69 + x4/k69) + k41)) + 198413/100*k69*k46*x21/k69*x8/k69*k8/(k6*(x8/k69*k8 + k42)) + (-2)*k69*k11*x23/k69*((x7/k69)^2 - x9/k69*x8/k69/k12)/(k13*x7/k69 + (x7/k69)^2 + k13*k16/(k14*k18)*(k15*x9/k69*(1 + x7/k69/k16) + k14*x8/k69*(1 + x7/k69/k16) + x9/k69*x8/k69)))/k69,
  diff(x8, t) = (-120773/100*k69*k46*x21/k69*x8/k69*k8/(k6*(x8/k69*k8 + k42)) + 1*k69*k11*x23/k69*((x7/k69)^2 - x9/k69*x8/k69/k12)/(k13*x7/k69 + (x7/k69)^2 + k13*k16/(k14*k18)*(k15*x9/k69*(1 + x7/k69/k16) + k14*x8/k69*(1 + x7/k69/k16) + x9/k69*x8/k69)))/k69,
  diff(x9, t) = ((-1)*k69*k39*x28/k67*x9/k69/(k40 + x9/k69) + 1*k69*k11*x23/k69*((x7/k69)^2 - x9/k69*x8/k69/k12)/(k13*x7/k69 + (x7/k69)^2 + k13*k16/(k14*k18)*(k15*x9/k69*(1 + x7/k69/k16) + k14*x8/k69*(1 + x7/k69/k16) + x9/k69*x8/k69)))/k69,
  diff(x10, t) = (1*k69*k39*x28/k67*x9/k69/(k40 + x9/k69) + (-1)*k64*x26/k64*(k48*k72/k64*x10/k64/(k54*k51) - k48*k58*k55/(k50*k54*k51)*k76/k64*k73/k64/(k58*k55))/(1 + k72/k64/k52 + x10/k64/k54*(1 + k76/k64/k59 + x17/k64/k61 + x18/k64/k60 + x16/k64/k62) + k72/k64*x10/k64/(k54*k51) + k76/k64/k56 + k73/k64/k58 + k76/k64*k73/k64/(k58*k55)) + 1*k64*k19*x24/k64*(x5/k64*x11/k64 - x10/k64*x12/k64/k20)/(k23*x5/k64 + k22*x11/k64 + x5/k64*x11/k64 + k22*k27/(k21*k28)*(k24*x10/k64*(1 + x5/k64/k26) + k21*x12/k64*(1 + x11/k64/k27) + x10/k64*x12/k64)))/k64,
  diff(x11, t) = (1*k64*k29*x25/k64*(x12/k64*k74/k64 - k75/k64*x11/k64/k36)/(k31*k33 + k33*x12/k64 + k30*k74/k64 + x12/k64*k74/k64 + k31*k33/(k35*k32)*(k32*k75/k64 + k34*x11/k64 + k75/k64*x11/k64)) + (-1)*k64*k19*x24/k64*(x5/k64*x11/k64 - x10/k64*x12/k64/k20)/(k23*x5/k64 + k22*x11/k64 + x5/k64*x11/k64 + k22*k27/(k21*k28)*(k24*x10/k64*(1 + x5/k64/k26) + k21*x12/k64*(1 + x11/k64/k27) + x10/k64*x12/k64)))/k64,
  diff(x12, t) = ((-1)*k64*k29*x25/k64*(x12/k64*k74/k64 - k75/k64*x11/k64/k36)/(k31*k33 + k33*x12/k64 + k30*k74/k64 + x12/k64*k74/k64 + k31*k33/(k35*k32)*(k32*k75/k64 + k34*x11/k64 + k75/k64*x11/k64)) + 1*k64*k19*x24/k64*(x5/k64*x11/k64 - x10/k64*x12/k64/k20)/(k23*x5/k64 + k22*x11/k64 + x5/k64*x11/k64 + k22*k27/(k21*k28)*(k24*x10/k64*(1 + x5/k64/k26) + k21*x12/k64*(1 + x11/k64/k27) + x10/k64*x12/k64)))/k64,
  diff(x13, t) = 0,
  diff(x14, t) = 0,
  diff(x15, t) = 0,
  diff(x16, t) = 0/k64,
  diff(x17, t) = 0/k64,
  diff(x18, t) = 0/k64,
  diff(x19, t) = 0,
  diff(x20, t) = 0,
  diff(x21, t) = 0/k69,
  diff(x22, t) = 0/k69,
  diff(x23, t) = 0/k69,
  diff(x24, t) = 0/k64,
  diff(x25, t) = 0/k64,
  diff(x26, t) = 0/k64,
  diff(x27, t) = 0/k67,
  diff(x28, t) = 0/k67,
  diff(x4, t) = x22/k69*k47*(1 - 1/(1 + exp((-100)*(x4/k69/(x2/k69*(1 - k3)) - 3/10))) + 1/(1 + exp((-100)*(x4/k69/(x2/k69*(1 - k3)) - 3/10)))*(1 - 1429/1000*(x4/k69/(x2/k69*(1 - k3)) - 3/10)))*k69 }