InChI=1S/C28H38O13/c1-36-16-7-13(8-17(37-2)22(16)31)20-15(9-29)14(5-12-6-18(38-3)24(33)27(39-4)21(12)20)11-40-28-26(35)25(34)23(32)19(10-30)41-28/h6-8,14-15,19-20,23,25-26,28-35H,5,9-11H2,1-4H3