ID 1.14.14.66 DE marmesin synthase. CA demethylsuberosin + reduced [NADPH--hemoprotein reductase] + O2 = (7S)- CA marmesin + oxidized [NADPH--hemoprotein reductase] + H2O + H(+). CC -!- Involved in psoralen biosynthesis, see EC 1.14.13.102. //