IUPAC:methyl (1S,14R,15E,18S)-15-ethylidene-12-oxo-10,17-diazatetracyclo[12.3.1.0^{3,11}.0^{4,9}]octadeca-3(11),4,6,8-tetraene-18-carboxylate
IUPAC:methyl (1S,14R,15E,18S)-15-ethylidene-12-oxo-10,17-diazatetracyclo[12.3.1.0^{3,11}.0^{4,9}]octadeca-3(11),4,6,8-tetraene-18-carboxylate