IUPAC:8,9-dimethyl (1R,9S,12R,17S)-16-formyl-19-oxo-8,16-diazapentacyclo[10.5.3.0^{1,9}.0^{2,7}.0^{12,17}]icosa-2,4,6-triene-8,9-dicarboxylate
IUPAC:8,9-dimethyl (1R,9S,12R,17S)-16-formyl-19-oxo-8,16-diazapentacyclo[10.5.3.0^{1,9}.0^{2,7}.0^{12,17}]icosa-2,4,6-triene-8,9-dicarboxylate