InChI=1S/C27H28O16/c28-7-14-17(31)19(33)21(35)24(42-14)16-11(30)6-13-15(18(16)32)10(29)5-12(41-13)8-1-3-9(4-2-8)40-27-23(37)20(34)22(36)25(43-27)26(38)39/h1-6,14,17,19-25,27-28,30-37H,7H2,(H,38,39)