label: 4-hydroxycasbene + reduced [NADPH--hemoprotein reductase] + O2 = 4,8-dihydroxycasbene + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)
label_lc: 4-hydroxycasbene + reduced [nadph--hemoprotein reductase] + o2 = 4,8-dihydroxycasbene + oxidized [nadph--hemoprotein reductase] + h2o + h(+)