InChI=1S/C27H30O15/c28-7-15-19(33)21(35)23(37)26(40-15)18-14(41-27-24(38)22(36)20(34)16(8-29)42-27)6-12(32)17-11(31)5-13(39-25(17)18)9-1-3-10(30)4-2-9/h1-6,15-16,19-24,26-30,32-38H,7-8H2