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