{ diff(x1, t) = ((-1)*k49*k1*x1*x3 + 1*k49*k2*x4)/k49,
  diff(x2, t) = ((-1)*k3*x2*x5*k49 + 1*k4*x6*k49)/k49,
  diff(x3, t) = ((-1)*k49*k1*x1*x3 + 1*k49*k2*x4)/k49,
  diff(x4, t) = (1*k49*k1*x1*x3 + (-1)*k49*k2*x4)/k49,
  diff(x5, t) = ((-1)*k3*x2*x5*k49 + 1*k4*x6*k49)/k49,
  diff(x6, t) = (1*k3*x2*x5*k49 + (-1)*k4*x6*k49)/k49,
  diff(x7, t) = ((-1)*k49*k5*x4*x7/(x7 + k6) + (-1)*k49*k7*x6*x7/(x7 + k8) + 1*k49*k9*x10*x8/(x8 + k10))/k49,
  diff(x8, t) = (1*k49*k5*x4*x7/(x7 + k6) + 1*k49*k7*x6*x7/(x7 + k8) + (-1)*k49*k9*x10*x8/(x8 + k10))/k49,
  diff(x9, t) = (-1)*k49*k27*x21*x9/(x9 + k28)/k49,
  diff(x10, t) = 1*k49*k27*x21*x9/(x9 + k28)/k49,
  diff(x11, t) = ((-1)*k49*k11*x8*x11/(x11 + k12) + 1*k49*k13*x13*x12/(x12 + k14))/k49,
  diff(x12, t) = (1*k49*k11*x8*x11/(x11 + k12) + (-1)*k49*k13*x13*x12/(x12 + k14))/k49,
  diff(x13, t) = 0/k49,
  diff(x14, t) = ((-1)*k49*k15*x12*x14/(x14 + k16) + 1*k49*k45*x32*x15/(x15 + k46) + 1*k49*k35*x25*x15/(x15 + k36))/k49,
  diff(x15, t) = (1*k49*k15*x12*x14/(x14 + k16) + (-1)*k49*k45*x32*x15/(x15 + k46) + (-1)*k49*k35*x25*x15/(x15 + k36))/k49,
  diff(x16, t) = ((-1)*k49*k43*x29*x16/(x16 + k44) + 1*k49*k47*x32*x17/(x17 + k48))/k49,
  diff(x17, t) = (1*k49*k43*x29*x16/(x16 + k44) + (-1)*k49*k47*x32*x17/(x17 + k48))/k49,
  diff(x18, t) = ((-1)*k49*k17*x15*x18/(x18 + k18) + (-1)*k49*k19*x17*x18/(x18 + k20) + 1*k49*k21*x31*x19/(x19 + k22))/k49,
  diff(x19, t) = (1*k49*k17*x15*x18/(x18 + k18) + 1*k49*k19*x17*x18/(x18 + k20) + (-1)*k49*k21*x31*x19/(x19 + k22))/k49,
  diff(x20, t) = ((-1)*k49*k23*x19*x20/(x20 + k24) + 1*k49*k25*x31*x21/(x21 + k26))/k49,
  diff(x21, t) = (1*k49*k23*x19*x20/(x20 + k24) + (-1)*k49*k25*x31*x21/(x21 + k26))/k49,
  diff(x22, t) = ((-1)*k49*k29*x4*x22/(x22 + k30) + (-1)*k49*k31*x12*x22/(x22 + k32))/k49,
  diff(x23, t) = (1*k49*k29*x4*x22/(x22 + k30) + 1*k49*k31*x12*x22/(x22 + k32))/k49,
  diff(x24, t) = (-1)*k49*k33*x23*x24/(x24 + k34)/k49,
  diff(x25, t) = 1*k49*k33*x23*x24/(x24 + k34)/k49,
  diff(x26, t) = (-1)*k49*k37*x6*x26/(x26 + k38)/k49,
  diff(x27, t) = 1*k49*k37*x6*x26/(x26 + k38)/k49,
  diff(x28, t) = ((-1)*k49*k39*x27*x28/(x28 + k40) + 1*k49*k41*x30*x29/(x29 + k42))/k49,
  diff(x29, t) = (1*k49*k39*x27*x28/(x28 + k40) + (-1)*k49*k41*x30*x29/(x29 + k42))/k49,
  diff(x30, t) = 0/k49,
  diff(x31, t) = 0/k49,
  diff(x32, t) = 0/k49 }