IUPAC:(1R,4E,7S,17R)-4-ethylidene-7-hydroxy-7-methyl-6-methylidene-2,9-dioxa-14-azatricyclo[9.5.1.0^{14,17}]heptadec-11-ene-3,8-dione
IUPAC:(1R,4E,7S,17R)-4-ethylidene-7-hydroxy-7-methyl-6-methylidene-2,9-dioxa-14-azatricyclo[9.5.1.0^{14,17}]heptadec-11-ene-3,8-dione