InChI=1S/C33H28O21S/c34-14-4-1-11(2-5-14)33(47)53-31-28(45)29(54-55(48,49)50)19(10-51-32(46)13-8-17(37)23(40)18(38)9-13)52-30(31)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)