InChI=1S/C27H30O15/c1-8-19(32)22(35)25(38)27(40-8)39-7-16-20(33)23(36)24(37)26(42-16)18-13(31)6-15-17(21(18)34)12(30)5-14(41-15)9-2-3-10(28)11(29)4-9/h2-6,8,16,19-20,22-29,31-38H,7H2,1H3