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