InChI=1/C16H19BrN2O4/c1-3-22-8-9-23-15(20)13-10(2)18-16(21)19-14(13)11-4-6-12(17)7-5-11/h4-7,14H,3,8-9H2,1-2H3,(H2,18,19,21)/t14-/m0/s1/f/h18-19H F4002FF1A9877120