InChI=1/C17H16BrNO4/c1-7-6-8(2-5-11(7)18)19-16(22)12-9-3-4-10(13(12)17(19)23)15(21)14(9)20/h2-6,9-10,12-15,20-21H,1H3/t9-,10+,12-,13+,14-,15+ 6B2A72B1E18DC144