InChI=1/C13H17BrN2O4/c1-20-7-6-15-11(13(18)19)8-12(17)16-10-4-2-9(14)3-5-10/h2-5,11,15H,6-8H2,1H3,(H,16,17)(H,18,19)/t11-/m1/s1/f/h15-16H	6F35A08094F0A684