IUPAC:methyl 12-ethylidene-17-oxo-8,14-diazapentacyclo[9.5.3.0^{1,10}.0^{2,7}.0^{14,18}]nonadeca-2,4,6,8-tetraene-10-carboxylate
IUPAC:methyl 12-ethylidene-17-oxo-8,14-diazapentacyclo[9.5.3.0^{1,10}.0^{2,7}.0^{14,18}]nonadeca-2,4,6,8-tetraene-10-carboxylate