InChI=1S/C17H23BrO3/c1-4-6-7-11-16(20-13(3)19)17-12-9-8-10-15(21-17)14(18)5-2/h1,6-9,14-17H,5,10-12H2,2-3H3/b7-6-/t14-,15+,16-,17-/m0/s1