InChI=1S/C20H23NO6/c1-25-16-5-4-14(12-17(16)26-2)8-11-21-19(23)7-10-20(24)9-6-15(22)18(13-20)27-3/h4-7,9-10,12-13,24H,8,11H2,1-3H3,(H,21,23)