InChI=1S/C19H25NO10/c21-12-5-3-7-20(12)6-2-1-4-11-8-10(18(27)29-11)9-28-19-15(24)13(22)14(23)16(30-19)17(25)26/h4,8,13-16,19,22-24H,1-3,5-7,9H2,(H,25,26)/b11-4+