[ Diff(x[1], t) = ((-1)*k[1]*k[2]*k[15]*x[1] + 1*k[1]*k[8]*x[17] + 1*k[1]*k[10])/k[1],
  Diff(x[2], t) = 0,
  Diff(x[3], t) = (1*k[1]*k[2]*k[15]*x[1] + (-1)*k[1]*k[3]*x[5]*x[3])/k[1],
  Diff(x[4], t) = 0,
  Diff(x[5], t) = ((-1)*k[1]*k[3]*x[5]*x[3] + 1*k[1]*k[8]*x[17] + 1*k[1]*k[9])/k[1],
  Diff(x[6], t) = 0,
  Diff(x[7], t) = (1*k[1]*k[3]*x[5]*x[3] + (-1)*k[1]*k[4]*k[18]*k[15]*x[7])/k[1],
  Diff(x[8], t) = 0,
  Diff(x[9], t) = 0,
  Diff(x[10], t) = 0,
  Diff(x[11], t) = (1*k[1]*k[4]*k[18]*k[15]*x[7] + (-1)*k[1]*k[7]*x[11]*k[24])/k[1],
  Diff(x[12], t) = 0,
  Diff(x[13], t) = 0,
  Diff(x[14], t) = 0,
  Diff(x[15], t) = 0,
  Diff(x[16], t) = ((-1)*k[1]*(k[5]*x[16]*k[21] - k[6]*x[17]*k[22]) + 1*k[1]*k[7]*x[11]*k[24] + (-1)*k[1]*k[12]*x[16]/(k[11] + x[16]))/k[1],
  Diff(x[17], t) = (1*k[1]*(k[5]*x[16]*k[21] - k[6]*x[17]*k[22]) + (-1)*k[1]*k[8]*x[17] + (-1)*k[1]*k[14]*x[17]/(k[13] + x[17]))/k[1] ]