Showing structure for OCC(OC(=O)C1=CC(O)=C(O)C(O)=C1)C(O)C1OC(=O)C2=C(C(O)=C(O)C(O)=C2)C2=C(O)C(O)=C(O)C3=C2C(=O)OC1C3O