label: (6S)-5-formyl-5,6,7,8-tetrahydrofolate + ATP <=> (6R)-5,10-methenyltetrahydrofolate + ADP + phosphate
label_lc: (6s)-5-formyl-5,6,7,8-tetrahydrofolate + atp <=> (6r)-5,10-methenyltetrahydrofolate + adp + phosphate