Formula: C22H22O10 | Mol. Weight: 446.40 g/mol
IUPAC: 2-[(1R,3S,3'S,4'R,6'R)-4'-acetyloxy-3',9-dihydroxy-6'-methyl-5,10-dioxospiro[3,4-dihydrobenzo[g]isochromene-1,2'-oxane]-3-yl]acetic acid
CC1CC(C(C2(O1)C3=C(CC(O2)CC(=O)O)C(=O)C4=C(C3=O)C(=CC=C4)O)O)OC(=O)C