[ Diff(x[1], t) = (1*k[3]*k[7]/(k[6] + x[41]) + (-1)*k[3]*k[47]*x[1]*(1 + piecewise(And(piecewise(Xor(t < 0, 24 < 0), t - 24*ceil(t/24), t - 24*floor(t/24)) >= 6, piecewise(Xor(t < 0, 24 < 0), t - 24*ceil(t/24), t - 24*floor(t/24)) <= 18), 1, 0)/(1 + piecewise(And(piecewise(Xor(t < 0, 24 < 0), t - 24*ceil(t/24), t - 24*floor(t/24)) >= 6, piecewise(Xor(t < 0, 24 < 0), t - 24*ceil(t/24), t - 24*floor(t/24)) <= 18), 1, 0)))/(k[46] + x[1]))/k[3],
  Diff(x[2], t) = (1*k[3]*k[10]*x[1]*(1 + k[9]*x[27])/(k[8] + x[41]) + (-1)*k[3]*k[12]*x[2]/(k[11] + x[2]))/k[3],
  Diff(x[3], t) = (1*k[15]*x[2]*k[14]*(1 + x[15]/(1 + x[15]))*(1 + k[13]*x[27]) + (-1)*k[3]*k[17]*x[3]/(k[16] + x[3]))/k[3],
  Diff(x[4], t) = 1*1/k[18]*(x[3] - x[4])/k[4],
  Diff(x[5], t) = (1*k[24]*(x[11] + k[19])/(k[20]*(1 + (x[7]/k[21])^k[23]))*(1 + k[22]*x[34]) + 1*k[25]*x[33]/x[11] + (-1)*k[4]*k[26]*x[5])/k[4],
  Diff(x[6], t) = (1*k[4]*k[27]*x[5]^k[28] + (-1)*k[4]*k[29]*x[6] + (-1)*k[30]*x[6] + 1*k[31]*x[7])/k[4],
  Diff(x[7], t) = (1*k[30]*x[6] + (-1)*k[31]*x[7] + (-1)*k[32]*x[7]*(1 + x[16]))/k[5],
  Diff(x[8], t) = (1*k[36]*x[7]^k[35]/(k[33]^k[35] + x[7]^k[35])*(1 + k[34]*x[24]) + (-1)*k[4]*k[37]*x[8])/k[4],
  Diff(x[9], t) = (1*k[4]*k[38]*x[8] + (-1)*(k[39]*x[9] - k[40]*x[10]) + (-1)*k[4]*k[43]*x[9])/k[4],
  Diff(x[10], t) = (1*(k[39]*x[9] - k[40]*x[10]) + (-1)*k[5]*k[41]*x[10] + 1*k[5]*k[42]*x[11] + (-1)*k[5]*k[44]*x[10])/k[5],
  Diff(x[11], t) = (1*k[5]*k[41]*x[10] + (-1)*k[5]*k[42]*x[11] + (-1)*k[5]*k[45]*x[11] + (-1)*(k[67]*x[11]*x[16] - k[68]*x[17]))/k[5],
  Diff(x[12], t) = (1*k[4]*k[49]*(k[50] - x[12])/(k[48] + k[50] - x[12]) + 1*k[4]*k[52]*x[13]/(k[51] + x[13]) + (-1)*k[54]*x[20]*x[12]/(k[53] + x[12]) + (-1)*k[4]*k[56]*x[12]/(k[55] + x[12]))/k[4],
  Diff(x[13], t) = ((-1)*k[4]*k[52]*x[13]/(k[51] + x[13]) + 1*k[4]*k[58]*x[18]*x[14]/(k[57] + x[14]))/k[4],
  Diff(x[14], t) = (1*k[4]*k[56]*x[12]/(k[55] + x[12]) + (-1)*k[4]*k[58]*x[18]*x[14]/(k[57] + x[14]))/k[4],
  Diff(x[15], t) = (1*k[4]*k[60]*x[12]/(k[59] + x[12]) + (-1)*k[4]*k[61]*x[15])/k[4],
  Diff(x[16], t) = (1*k[4]*k[63]*x[12]*(k[64] - x[16])/(k[62] + k[64] - x[16]) + (-1)*k[4]*k[66]*x[16]/(k[65] + x[16]) + (-1)*(k[67]*x[11]*x[16] - k[68]*x[17]))/k[4],
  Diff(x[17], t) = (1*(k[67]*x[11]*x[16] - k[68]*x[17]) + (-1)*k[5]*k[69]*x[17])/k[5],
  Diff(x[18], t) = (1*k[70]*x[17] + (-1)*k[4]*k[71]*x[18])/k[4],
  Diff(x[19], t) = 1*k[3]*1/k[72]*(piecewise(And(piecewise(Xor(t < 0, 24 < 0), t - 24*ceil(t/24), t - 24*floor(t/24)) >= 6, piecewise(Xor(t < 0, 24 < 0), t - 24*ceil(t/24), t - 24*floor(t/24)) <= 18), 1, 0) - x[19])/k[3],
  Diff(x[20], t) = 1*k[3]*1/k[73]*(x[19] - x[20])/k[3],
  Diff(x[21], t) = (1*k[4]*k[74]*(1 + x[25]) + (-1)*k[4]*k[75]*x[21])/k[4],
  Diff(x[22], t) = ((-1)*k[4]*k[76]*x[22] + (-1)*k[77]*x[22] + 1*k[78]*x[23] + 1*k[4]*k[85]*x[21])/k[4],
  Diff(x[23], t) = (1*k[77]*x[22] + (-1)*k[78]*x[23] + 1*k[5]*k[79]*x[24] + (-1)*k[80]*x[24]*x[16])/k[5],
  Diff(x[24], t) = ((-1)*k[5]*k[79]*x[24] + (-1)*k[5]*k[81]*x[24] + 1*k[86]*x[23]*(1 + x[16]))/k[5],
  Diff(x[25], t) = (1*k[82]*x[24] + (-1)*k[4]*k[83]*x[25])/k[4],
  Diff(x[26], t) = ((-1)*k[4]*k[84]*x[26] + 1*k[134]*x[25]*x[33]*1/(1 + (x[7]/k[135])^k[136]))/k[4],
  Diff(x[27], t) = 1*1/k[87]*(x[34] - x[27])/k[3],
  Diff(x[28], t) = (1*k[4]*k[92]*(1 + k[91]*x[4]/(k[89] + x[4]))*(k[90] - x[28])/(k[88] + k[90] - x[28]) + (-1)*k[4]*k[99]*x[28]/(k[98] + x[28]) + (-1)*k[4]*k[102]*x[28]*x[4] + 1*k[106]*x[32])/k[4],
  Diff(x[29], t) = (1*k[4]*k[97]*(1 + k[96]*x[4]/(k[95] + x[4]))*(k[93] - x[29])/(k[94] + k[93] - x[29]) + (-1)*k[4]*k[101]*x[29]/(k[100] + x[29]) + (-1)*k[4]*k[103]*x[29]*x[4] + 1*k[107]*x[33])/k[4],
  Diff(x[30], t) = (1*k[4]*k[103]*x[29]*x[4] + (-1)*k[105]*x[30])/k[4],
  Diff(x[31], t) = (1*k[4]*k[102]*x[28]*x[4] + (-1)*k[104]*x[31])/k[4],
  Diff(x[32], t) = (1*k[104]*x[31] + (-1)*k[106]*x[32])/k[5],
  Diff(x[33], t) = (1*k[105]*x[30] + (-1)*k[107]*x[33])/k[5],
  Diff(x[34], t) = (1*k[4]*k[114]*x[35] + (-1)*k[4]*k[115]*x[34])/k[4],
  Diff(x[35], t) = (1*k[111]*(1 - k[110]*x[33]/(k[108] + x[33]))*(1 - k[112]*x[10]/(k[109] + x[10]))*(1 + x[38]) + (-1)*k[4]*k[113]*x[35])/k[4],
  Diff(x[36], t) = (1*k[118]*(1 - k[117]*x[32]/(k[116] + x[32])) + (-1)*k[4]*k[119]*x[36])/k[4],
  Diff(x[37], t) = (1*k[4]*k[120]*x[36] + (-1)*k[4]*k[121]*x[37] + (-1)*k[4]*k[122]*x[37]*x[34])/k[4],
  Diff(x[38], t) = (1*k[4]*k[122]*x[37]*x[34] + (-1)*k[4]*k[133]*x[38])/k[4],
  Diff(x[39], t) = ((-1)*k[3]*k[124]*x[39]/(k[123] + x[39]) + 1*k[3]*k[129]*(1 + k[128]*x[3]/(k[127] + x[3]))*(k[125] - x[39])/(k[126] + k[125] - x[39]) + (-1)*k[3]*k[130]*x[39]*x[3] + 1*k[3]*k[132]*x[41])/k[3],
  Diff(x[40], t) = (1*k[3]*k[130]*x[39]*x[3] + (-1)*k[3]*k[131]*x[40])/k[3],
  Diff(x[41], t) = (1*k[3]*k[131]*x[40] + (-1)*k[3]*k[132]*x[41])/k[3] ]