InChI=1/C18H20BrN3O4/c19-14-8-11(18(24)25)3-6-16(14)26-10-12-4-5-15(21-12)17(23)22-7-1-2-13(22)9-20/h3,6,8,12-13,15,21H,1-2,4-5,7,10H2,(H,24,25)/t12-,13+,15+/m1/s1/f/h21H A36E544973239F6A