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