InChI=1S/C28H38O13/c1-8-12(4)26(36)38-15(10-9-11(2)3)13(5)16-20(37-14(6)29)23(33)28(7)24(41-28)21(16)39-27-19(32)17(30)18(31)22(40-27)25(34)35/h8-9,15-22,24,27,30-32H,5,10H2,1-4,6-7H3,(H,34,35)/b12-8-