InChI=1/C16H17BrN2O4/c17-12-6-7-16(22)19(9-12)10-15(21)18-8-13(20)11-23-14-4-2-1-3-5-14/h1-7,9,13,20H,8,10-11H2,(H,18,21)/t13-/m1/s1/f/h18H 5D63A79CA23E238C