Formula: C25H18O9 | Mol. Weight: 462.40 g/mol
IUPAC: (2S,3S)-2-(3,4-dihydroxyphenyl)-6-[(E)-2-(3,4-dihydroxyphenyl)ethenyl]-5'-methylspiro[2H-furo[3,2-c]pyran-3,2'-furan]-3',4-dione
CC1=CC(=O)C2(O1)C(OC3=C2C(=O)OC(=C3)C=CC4=CC(=C(C=C4)O)O)C5=CC(=C(C=C5)O)O