The molecule is an isoquinoline alkaloid that is 4,4a-dihydro-3H,6H-5,10b-ethanophenanthridin-3-one carrying additional hydroxy and methoxy substituents at positions 8 and 9 respectively (the 4aR,10bS-diastereomer). It has a role as a plant metabolite. It is an aromatic ether, a bridged compound, a cyclic ketone, an enone, an isoquinoline alkaloid, a member of phenols, a tertiary amino compound and an organic heterotetracyclic compound. It is a conjugate base of a (4aR,10bS)-noroxomaritidine(1+). It is an enantiomer of a (4aS,10bR)-noroxomaritidine.
(1S,10R)-5-hydroxy-4-methoxy-9-azatetracyclo[7.5.2.01,10.02,7]hexadeca-2,4,6,13-tetraen-12-one