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