SMILES: C[C@H]1[C@@H]([C@H]([C@H]([C@@H](O1)O[C@@H]2[C@H]([C@H](CO[C@H]2OC3=C(OC4=CC(=CC(=C4C3=O)O)O[C@H]5[C@@H]([C@H]([C@@H]([C@H](O5)CO)O)O)O)C6=CC(=C(C=C6)O)O)O)O)O)O)OC(=O)/C=C/C7=CC(=C(C=C7)O)O
Description: The molecule is a quercetin O-glucoside in which a 4''-O-caffeoyl-alpha-L-rhamnopyranosyl-(1->2)-alpha-L-arabinopyranosyl and a beta-D-glucopyranosyl moiety is attached respectively via a glycosidic linkage to positions 3 and 7 of quercetin. It is isolated from the aerial parts of Putoria calabrica and exhibits radical scavenging activity. It has a role as a metabolite and a radical scavenger. It is a beta-D-glucoside, a quercetin O-glucoside, a cinnamate ester and a member of catechols. It derives from a trans-caffeic acid.