label: 3,17-dihydroxy-9,10-secoandrost-1,3,5(10)-triene-9-one + FMNH2 + O2 = 3,4,17-trihydroxy-9,10-secoandrost-1,3,5(10)-triene-9-one + FMN + H2O + H(+)
label_lc: 3,17-dihydroxy-9,10-secoandrost-1,3,5(10)-triene-9-one + fmnh2 + o2 = 3,4,17-trihydroxy-9,10-secoandrost-1,3,5(10)-triene-9-one + fmn + h2o + h(+)