x1 = x_CO2
x2 = RuBP_ch
x3 = PGA_ch
x4 = ATP_ch
x5 = BPGA_ch
x6 = x_NADPH_ch
x7 = GAP_ch
x8 = Pi_ch
x9 = DHAP_ch
x10 = FBP_ch
x11 = F6P_ch
x12 = E4P_ch
x13 = X5P_ch
x14 = SBP_ch
x15 = S7P_ch
x16 = R5P_ch
x17 = Ru5P_ch
x18 = x_Pi_cyt
x19 = x_GAP_cyt
x20 = G6P_ch
x21 = x_NADP_ch
x22 = x_PGA_cyt
x23 = ADP_ch
x24 = x_DHAP_cyt
x25 = x_Proton_ch
x26 = G1P_ch
x27 = x_Starch_ch