InChI=1S/C20H25NO6/c1-25-16-6-4-14(12-17(16)26-2)5-7-19(23)21-11-10-20(24)9-8-15(22)18(13-20)27-3/h4,6,8-9,12-13,24H,5,7,10-11H2,1-3H3,(H,21,23)