Chemical Name: 4,5α-epoxy-3-methoxy-7,8-didehydromorphinan-6α-ol (as per EP)
Synonym: Norcodeine
Smiles: [H][C@@]12[C@]34C5=C(C=CC(OC)=C5O[C@@]4([H])[C@@]([H])(O)C=C2)C[C@@]1([H])NCC3
Inchi: InChI=1S/C18H21NO4/c1-19-8-7-17-14-10-3-4-12(22-2)15(14)23-16(17)11(20)5-6-18(17,21)13(19)9-10/h3-6,11,13,16,20-21H,7-9H2,1-2H3/t11-,13+,16-,17-,18+/m0/s1