label: (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + NADP(+) => (6R)-5,10-methenyltetrahydrofolate + NADPH
label_lc: (6r)-5,10-methylene-5,6,7,8-tetrahydrofolate + nadp(+) => (6r)-5,10-methenyltetrahydrofolate + nadph