Formula: C22H28O8 | Mol. Weight: 420.50 g/mol
IUPAC: (1S,2S,7S,9R,13S,17S)-13-hydroxy-4,5,15-trimethoxy-2,14,17-trimethyl-10-oxatetracyclo[7.7.1.02,7.013,17]heptadeca-4,14-diene-3,11,16-trione
CC1=C(C(=O)C2C3(C(CC4C2(C1(CC(=O)O4)O)C)CC(=C(C3=O)OC)OC)C)OC