InChI=1S/C17H22BrNO3/c1-4-5-6-14(20)19-15(11(2)3)17(21)22-16(19)12-7-9-13(18)10-8-12/h7-11,15-16H,4-6H2,1-3H3/t15-,16?/m0/s1