[ Eq(Derivative(x1, t), ((-1)*k50*k40*x1*x7 + 1*k50*x8*k20*k40 + (-1)*k50*k29*x1 + 1*k50*x3*k18*k29 + 1*k50*k3*k29*k35**2/(k29*k35 + k35**2 + k18*k29*k35))/k50),
  Eq(Derivative(x2, t), ((-1)*k50*x5*x2*k41 + 1*k50*x7*k21*k41 + (-1)*k50*k30*x2 + 1*k50*x4*k19*k30 + 1*k50*k4*k30*k36**2/(k30*k36 + k36**2 + k19*k30*k36))/k50),
  Eq(Derivative(x3, t), (1*k50*k36*x9 + 1*k50*k44*x9 + (-1)*k50*k35*x3 + 1*k50*x10*k17*k44 + 1*k50*x10*k16*k36 + 1*k50*k29*x1 + (-1)*k50*x3*k18*k29 + 1*k50*k28*x9)/k50),
  Eq(Derivative(x4, t), (1*k50*k35*x9 + 1*k50*k44*x9 + (-1)*k50*k36*x4 + 1*k50*x10*k17*k44 + 1*k50*k30*x2 + (-1)*k50*x4*k19*k30 + 1*k50*k28*x9)/k50),
  Eq(Derivative(x5, t), ((-1)*k50*x5*x2*k41/k32 + 1*k50*x7*k21*k41/k32 + (-1)*k50*k47*x5)/k50),
  Eq(Derivative(x6, t), (1*k50*k36*x9 + 1*k50*k35*x9 + 1*k50*x10*k16*k36 + 1*k50*k28*x9 + (-1)*k50*k44*x6)/k50),
  Eq(Derivative(x7, t), (1*k50*x5*x2*k41 + (-1)*k50*x7*k21*k41 + (-1)*k50*k40*x1*x7 + 1*k50*x8*k20*k40)/k50),
  Eq(Derivative(x8, t), (1*k50*k40*x1*x7 + (-1)*k50*x8*k20*k40 + (-1)*k50*k42*x8*x18 + 1*k50*x10*k24*k42 + (-1)*k50*x8*k15*k29)/k50),
  Eq(Derivative(x9, t), ((-1)*k50*k36*x9 + (-1)*k50*k35*x9 + (-1)*k50*k44*x9 + 1*k50*x8*k15*k29 + (-1)*k50*k28*x9)/k50),
  Eq(Derivative(x10, t), (1*k50*k42*x8*x18 + (-1)*k50*x10*k24*k42 + (-1)*k50*x10*k17*k44 + (-1)*k50*x10*k16*k36)/k50),
  Eq(Derivative(x11, t), (1*k50*x9*x12*k33 + (-2)*k50*k43*x11**2*x13 + 2*k50*k34*x14 + (-3)*k50*k23*k43*x11**3 + 3*k50*k22*k34*x15 + (-1)*k50*k6*x11 + 1*k51*k5*x19 + (-1)*k50*k37*x11 + 1*k50*k37*x14 + 2*k50*k38*x14 + 2*k50*k37*x15)/k50),
  Eq(Derivative(x12, t), ((-1)*k50*x9*x12*k33 + (-1)*k50*x12*k6 + 1*k51*x22*k5 + 1*k50*k7*(k6*k37 + k5*k37 + k37**2)/(2*k6 + k5 + k37) + (-1)*k50*k37*x12)/k50),
  Eq(Derivative(x13, t), ((-1)*k50*k43*x11**2*x13 + 1*k50*k34*x14 + (-1)*k50*x13*k9 + 1*k51*x23*k8 + 1*k50*k10*(k9*k38 + k8*k38 + k38**2)/(2*k9 + k8 + k38) + (-1)*k50*k38*x13 + 1*k50*k37*x14)/k50),
  Eq(Derivative(x14, t), (1*k50*k43*x11**2*x13 + (-1)*k50*k34*x14 + (-1)*k50*k12*x14 + (-1)*k50*k37*x14 + (-1)*k50*k38*x14)/k50),
  Eq(Derivative(x15, t), (1*k50*k23*k43*x11**3 + (-1)*k50*k22*k34*x15 + (-1)*k50*k12*x15 + (-1)*k50*k37*x15)/k50),
  Eq(Derivative(x16, t), (1*k51*x17*k13 + (-1)*k50*k46*x16)/k50),
  Eq(Derivative(x17, t), (1*k51*k1*k11*(k48 + k31*x20**k14/(k2**k14 + x20**k14)) + (-1)*k51*x17*k13 + (-1)*k51*k45*x17)/k51),
  Eq(Derivative(x18, t), ((-1)*k50*k42*x8*x18 + 1*k50*x10*k24*k42 + 1*k50*x10*k17*k44 + 1*k50*x10*k16*k36 + 1*k50*x16*k27 + (-1)*k50*k39*x18)/k50),
  Eq(Derivative(x19, t), ((-2)*k51*k43*x19**2*x23 + 2*k51*k34*x20 + (-3)*k51*k23*k43*x19**3 + 3*k51*k22*k34*x21 + 1*k50*k6*x11 + (-1)*k51*k5*x19 + (-1)*k51*k26*x19 + 1*k51*k25*k26*x20 + (-1)*k51*k37*x19 + 1*k51*k37*x20 + 2*k51*k38*x20 + 2*k51*k37*x21)/k51),
  Eq(Derivative(x20, t), (1*k51*k43*x19**2*x23 + (-1)*k51*k34*x20 + 1*k50*k12*x14 + (-1)*k51*k25*k26*x20 + (-1)*k51*k37*x20 + (-1)*k51*k38*x20)/k51),
  Eq(Derivative(x21, t), (1*k51*k23*k43*x19**3 + (-1)*k51*k22*k34*x21 + 1*k50*k12*x15 + (-1)*k51*k37*x21)/k51),
  Eq(Derivative(x22, t), (1*k50*x12*k6 + (-1)*k51*x22*k5 + 1*k51*k26*x19 + 1*k51*k25*k26*x20 + (-1)*k51*k37*x22)/k51),
  Eq(Derivative(x23, t), ((-1)*k51*k43*x19**2*x23 + 1*k51*k34*x20 + 1*k50*x13*k9 + (-1)*k51*x23*k8 + 1*k51*k25*k26*x20 + (-1)*k51*k38*x23 + 1*k51*k37*x20)/k51) ]