InChI=1S/C20H28N2O10/c1-30-11-8-10(4-5-13(23)22-7-3-2-6-21)9-12(14(11)24)31-20-17(27)15(25)16(26)18(32-20)19(28)29/h4-5,8-9,15-18,20,24-27H,2-3,6-7,21H2,1H3,(H,22,23)(H,28,29)