label: 5,10-methenyl-5,6,7,8-tetrahydromethanopterin + H2O => N(5)-formyl-5,6,7,8-tetrahydromethanopterin + H(+)
label_lc: 5,10-methenyl-5,6,7,8-tetrahydromethanopterin + h2o => n(5)-formyl-5,6,7,8-tetrahydromethanopterin + h(+)