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