{ diff(x1, t) = (1*k32*k1 + 1*k32*k2*x14 + (-1)*k32*k3*x1)/k32,
  diff(x2, t) = (1*k32*k1 + (-1)*k32*k3*x2)/k32,
  diff(x3, t) = (1*k32*k1 + (-1)*k32*k3*x3)/k32,
  diff(x4, t) = (1*k32*k4*x1 + (-1)*k32*(k5 + k6*k33*x5 + k7*k34*x10)*x4 + (-1)*k32*(k9*x5*x4 - k10*x6) + 1*k32*(k11 + k12*k33*x5)*x6 + 1*k32*k14*x17 + (-1)*k32*(k21*x7*x4 - k22*x17) + (-1)*k32*(k21*x10*x4 - k22*x11))/k32,
  diff(x5, t) = (1*k32*k8*x2 + (-1)*k32*(k11 + k12*k33*x5)*x5 + (-1)*k32*(k9*x5*x4 - k10*x6) + 1*k32*(k5 + k6*k33*x5 + k7*k34*x10)*x6)/k32,
  diff(x6, t) = (1*k32*(k9*x5*x4 - k10*x6) + (-1)*k32*(k11 + k12*k33*x5)*x6 + (-1)*k32*(k5 + k6*k33*x5 + k7*k34*x10)*x6)/k32,
  diff(x7, t) = (1*k32*k13 + (-1)*k32*k14*x7 + (-1)*k32*(k21*x7*x4 - k22*x17) + 1*k32*(k5 + k6*k33*x5 + k7*k34*x10)*x17 + (-1)*k32*(k19*x7*x9 - k20*x10) + 1*k32*piecewise(0, x12 < 1, piecewise(1*x10, x12 > 1, 1/2*x10)))/k32,
  diff(x8, t) = ((-1)*k32*k15*x5^k18/(k17^k18 + x5^k18)*x8 + 1*k32*k16*x9 + (-1)*k32*piecewise(0, x12 < 1, piecewise(1*x8, x12 > 1, 1/2*x8)))/k32,
  diff(x9, t) = (1*k32*k15*x5^k18/(k17^k18 + x5^k18)*x8 + (-1)*k32*k16*x9 + (-1)*k32*(k19*x7*x9 - k20*x10) + (-1)*k32*(k19*x17*x9 - k20*x11) + (-1)*k32*piecewise(0, x12 < 1, piecewise(1*x9, x12 > 1, 1/2*x9)))/k32,
  diff(x10, t) = (1*k32*(k19*x7*x9 - k20*x10) + (-1)*k32*(k21*x10*x4 - k22*x11) + 1*k32*(k5 + k6*k33*x5 + k7*k34*x10)*x11 + (-1)*k32*piecewise(0, x12 < 1, piecewise(1*x10, x12 > 1, 1/2*x10)))/k32,
  diff(x11, t) = (1*k32*(k19*x17*x9 - k20*x11) + 1*k32*(k21*x10*x4 - k22*x11) + (-1)*k32*(k5 + k6*k33*x5 + k7*k34*x10)*x11 + (-1)*k32*piecewise(0, x12 < 1, piecewise(1*x11, x12 > 1, 1/2*x11)))/k32,
  diff(x12, t) = 1*k32*k23*x10/k32,
  diff(x13, t) = (1*k32*k27 + 1*k32*k28*x10 + (-1)*k32*(k29 + k30*x14/(k31 + x13))*x13)/k32,
  diff(x14, t) = (1*k32*k24*x3 + (-1)*k32*k25/(k26 + x13)*x14)/k32,
  diff(x15, t) = 0,
  diff(x16, t) = 0,
  diff(x17, t) = ((-1)*k32*k14*x17 + 1*k32*(k21*x7*x4 - k22*x17) + (-1)*k32*(k5 + k6*k33*x5 + k7*k34*x10)*x17 + (-1)*k32*(k19*x17*x9 - k20*x11) + 1*k32*piecewise(0, x12 < 1, piecewise(1*x11, x12 > 1, 1/2*x11)))/k32 }