InChI=1S/C31H35N3O17S/c32-14(30(48)49)6-8-18(38)34-15(29(47)33-9-19(39)40)11-52-28-22(42)20(16(37)7-3-12-1-4-13(36)5-2-12)27(24(44)25(28)45)51-31-26(46)23(43)21(41)17(10-35)50-31/h1-5,7,14-15,17,21,23,26,31,35-36,41,43,45-46H,6,8-11,32H2,(H,33,47)(H,34,38)(H,39,40)(H,48,49)/b7-3+