label: psoralen + acetone + oxidized [NADPH--hemoprotein reductase] + 2 H2O + H(+) => (7S)-marmesin + reduced [NADPH--hemoprotein reductase] + O2
label_lc: psoralen + acetone + oxidized [nadph--hemoprotein reductase] + 2 h2o + h(+) => (7s)-marmesin + reduced [nadph--hemoprotein reductase] + o2