InChI=1/C20H25BrO3/c1-12-7-13(2)16(20(4,5)11-12)8-15-9-19(23-6)17(21)10-18(15)24-14(3)22/h7,9-10,16H,2,8,11H2,1,3-6H3/t16-/m0/s1 3ABD4640D1F3334C