Formula: C27H38O5 | Mol. Weight: 442.60 g/mol
IUPAC: (1R,2S,4S,5'R,6R,7S,8R,9S,12S,13R,18S)-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icosane-6,2'-oxane]-10,16,19-trione
CC1CCC2(C(C3C(O2)CC4C3(C(=O)CC5C4CC(=O)C6C5(CCC(=O)C6)C)C)C)OC1