InChI=1S/C37H32O17/c1-11-6-15(38)23-17(51-11)8-13-9-18(53-37-31(45)29(43)30(44)35(54-37)36(46)47)25(32(49-4)20(13)27(23)41)21-14-10-19(48-3)26(40)34(50-5)22(14)28(42)24-16(39)7-12(2)52-33(21)24/h6-10,29-31,35,37,40-45H,1-5H3,(H,46,47)