OC1C(OC(=O)C1C1=CC(O)=C2OC(=O)C3=CC(=CC1=C23)C1C(O)\C(OC1=O)=C(\C(O)=O)C1=CC=C(O)C=C1)C(C(O)=O)C1=CC=C(O)C=C1