InChI=1/C21H28N2O7S/c1-5-6-15-29-16-7-9-17(10-8-16)31(27,28)21(18(24)22-26)11-13-23(14-12-21)19(25)30-20(2,3)4/h7-10,26H,11-15H2,1-4H3,(H,22,24)/f/h22H 81A4FA8019BAA277