x1 = G6P
x2 = ATP
x3 = ADP
x4 = Pint
x5 = F6P
x6 = FBP
x7 = G3P
x8 = BPG
x9 = PEP
x10 = NAD
x11 = NADH
x12 = PYR
x13 = AcetCoA
x14 = Acetoin
x15 = Mannitol
x16 = Mannitol1Phosphate
x17 = CoA
x18 = Pext
x19 = Lactate
x20 = Ethanol
x21 = Acetate
x22 = Butanediol
x23 = Glucose
x24 = Acetoin_Ext
x25 = Mannitol_Ext
x26 = Formate