InChI=1S/C38H34O17/c1-12-7-16(39)24-19(52-12)10-14-9-18(48-3)26(28(42)21(14)32(24)50-5)22-15-11-20(49-4)27(41)35(54-38-31(45)29(43)30(44)36(55-38)37(46)47)23(15)33(51-6)25-17(40)8-13(2)53-34(22)25/h7-11,29-31,36,38,41-45H,1-6H3,(H,46,47)