Formula: C26H31NO4 | Mol. Weight: 421.50 g/mol
IUPAC: (1R,2R,4R,6R,7S,11S,16R)-1,7,11,15,15-pentamethyl-6-(5-oxo-1,2-dihydropyrrol-4-yl)-3-oxapentacyclo[8.8.0.02,4.02,7.011,16]octadeca-9,12-diene-14,18-dione
CC1(C2CC(=O)C3(C(=CCC4(C35C(O5)CC4C6=CCNC6=O)C)C2(C=CC1=O)C)C)C