InChI=1S/C27H30O16/c28-7-17-19(33)21(35)23(37)26(42-17)40-15-3-9(1-2-12(15)31)25-16(6-11-13(32)4-10(30)5-14(11)39-25)41-27-24(38)22(36)20(34)18(8-29)43-27/h1-6,17-24,26-29,33-38H,7-8H2,(H2-,30,31,32)/p+1