{ diff(x1, t) = ((-1)*k32*k1*x1*x16 + 1*k32*k2*x2)/k32,
  diff(x2, t) = (1*k32*k1*x1*x16 + (-1)*k32*k2*x2)/k32,
  diff(x3, t) = (1*k32*k4*x4 + (-1)*k32*k5*x3 + (-1)*(k10*x3*x11 - k10*k24*x8) + 1*k32*k13*x9)/k32,
  diff(x4, t) = ((-1)*k32*k3*x2*x4 + (-1)*k32*k4*x4 + 1*k32*k5*x3 + 1*k32*(k6*x5*x6 - k7*x4))/k32,
  diff(x5, t) = (1*k32*k3*x2*x4 + (-1)*k32*(k6*x5*x6 - k7*x4))/k32,
  diff(x6, t) = (1*k32*k3*x2*x4 + (-1)*k32*(k6*x5*x6 - k7*x4) + 1*k32*(k8*x7*x12 - k8*k23*x6))/k32,
  diff(x7, t) = ((-1)*k32*(k8*x7*x12 - k8*k23*x6) + (-1)*(k21*x7*x11 - k21*k26*x15))/k32,
  diff(x8, t) = (1*(k10*x3*x11 - k10*k24*x8) + (-1)*k32*k12*x8)/k32,
  diff(x9, t) = (1*k32*k12*x8 + (-1)*k32*k13*x9)/k32,
  diff(x10, t) = (1*k32*k13*x9 + (-1)*k32*k14*x10)/k32,
  diff(x11, t) = ((-1)*(k10*x3*x11 - k10*k24*x8) + 1*k33*k15 + (-1)*k33*k16*x11 + (-1)*k33*(k19*x11*x13 - k19*k25*x14) + (-1)*(k21*x7*x11 - k21*k26*x15))/k33,
  diff(x12, t) = ((-1)*k32*(k8*x7*x12 - k8*k23*x6) + 1*k32*k17 + (-1)*k32*k18*x12)/k32,
  diff(x13, t) = (-1)*k33*(k19*x11*x13 - k19*k25*x14)/k33,
  diff(x14, t) = 1*k33*(k19*x11*x13 - k19*k25*x14)/k33,
  diff(x15, t) = 1*(k21*x7*x11 - k21*k26*x15)/k32 }