InChI=1/C15H19BrN2O3/c16-10-3-4-13(14(19)6-10)15(20)17-7-12-8-18-5-1-2-11(18)9-21-12/h3-4,6,11-12,19H,1-2,5,7-9H2,(H,17,20)/t11-,12+/m1/s1/f/h17H A06D00CE2D45A93D