InChI=1/C16H17BrN2O5S/c1-10-8-11(17)9-14(16(20)18-21)15(10)19(2)25(22,23)13-6-4-12(24-3)5-7-13/h4-9,21H,1-3H3,(H,18,20)/f/h18H F7531E69E6DD2DEF