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