label: 2-amino-5-formylamino-6-(5-phospho-D-ribosylamino)pyrimidin-4(3H)-one + H2O = 2,5-diamino-6-(1-D-ribosylamino)pyrimidin-4(3H)-one 5'-phosphate + formate + H(+)
label_lc: 2-amino-5-formylamino-6-(5-phospho-d-ribosylamino)pyrimidin-4(3h)-one + h2o = 2,5-diamino-6-(1-d-ribosylamino)pyrimidin-4(3h)-one 5'-phosphate + formate + h(+)