InChI=1S/C33H28O21S/c34-14-4-1-11(2-5-14)32(46)51-10-19-29(54-55(48,49)50)28(45)31(53-33(47)13-8-17(37)23(40)18(38)9-13)30(52-19)21-24(41)20(25(42)27(44)26(21)43)22(39)12-3-6-15(35)16(36)7-12/h1-9,19,28-31,34-38,40-45H,10H2,(H,48,49,50)