InChI=1S/C19H22O7/c1-9-7-16-8-17(9,25)6-3-10(16)19-5-2-4-18(14(22)23,15(24)26-19)12(19)11(16)13(20)21/h10-12,25H,1-8H2,(H,20,21)(H,22,23)