Patent ID: 8884061

Claim:
A compound of the Formula: or a pharmaceutically acceptable salt thereof, wherein: m is an integer from 0 to 4; n is an integer from 0 to 5; each of R 1 and R 2 is independently bromine, chlorine, haloalkyl, or —OR 8 ; each of R 3 and R 4 is independently hydrogen or —OR 8 ; or R 3 and R 4 together form ═X, wherein X is O, S, or NR 9 ; R 5 is a linker having from 8 to 12 atoms, each of which is independently selected from the group consisting of C, N, O, S, provided no two heteroatoms are adjacent to one another, forming a substituted or unsubstituted alkylene, alkenylene, or alkynylene; R 6 is hydrogen, alkyl, or —NR 10 R 11 ; each of R 7 and R 10 is independently hydrogen, alkyl, aralkyl, alkenyl, or alkynyl; each of R 8 and R 9 is independently hydrogen or alkyl; and R 11 is hydrogen or alkyl, wherein one of R 3 and R 4 is hydrogen and the other is —OR 8 .