metNames	comps	formula	charge	metNotes
(S)-malate	m	C4H4O5	-2	charge assigned at pH 7.3
2-oxoglutarate	m	C5H4O5	-2	charge assigned at pH 7.3
2-phospho-D-glycerate	c	C3H4O7P	-3	charge assigned at pH 7.3
3-phospho-D-glycerate	c	C3H4O7P	-3	charge assigned at pH 7.3