IUPAC:methyl (1S,11S,17R,18S)-18-ethyl-8,14-diazapentacyclo[9.5.2.0^{1,9}.0^{2,7}.0^{14,17}]octadeca-2,4,6,9-tetraene-10-carboxylate
IUPAC:methyl (1S,11S,17R,18S)-18-ethyl-8,14-diazapentacyclo[9.5.2.0^{1,9}.0^{2,7}.0^{14,17}]octadeca-2,4,6,9-tetraene-10-carboxylate