x1 = RuBP
x2 = PGA
x3 = TP
x4 = HeP
x5 = TPGA
x6 = E4P
x7 = S7P
x8 = Ru5P
x9 = GG
x10 = ATP
x11 = ADP
x12 = UTP
x13 = UDP
x14 = Pi
x15 = CO2
x16 = TPc
x17 = HePc
x18 = Suc
x19 = Pic
x20 = SucV
x21 = E
x22 = Resp