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