Patent ID: 8450466

Claim:
A compound, or a pharmaceutically acceptable salt thereof, represented by formula I: wherein, independently for each occurrence, X is —O—; Y is —C(R 1 ) 2 —; L is —R 3 , —C(═O)R 3 , —C(═O)[C(R 1 ) 2 ] p R 3 , or —[C(R 1 ) 2 ] p C(═O)R 3 ; R 1 is hydrogen, halo, alkyl, haloalkyl, perhaloalkyl, fluoroalkyl, perfluoroalkyl, hydroxy, or alkoxy; R 2 is an unsubstituted alkyl, or alkyl substituted with one or more substituents selected from the group consisting of halo, hydroxy, alkoxy, and amino; R 3 is R 4 is hydrogen, halo, alkyl, haloalkyl, perhaloalkyl, fluoroalkyl, perfluoroalkyl, hydroxy, or alkoxy; m is 1, 2 or 3; n is 1, 2 or 3; m plus n is 3 or 4; and p is 1-10 inclusive.