Patent ID: 7550595

Claim:
A pharmaceutical composition comprising a pharmaceutically acceptable carrier and a therapeutically effective amount of a compound having the formula: wherein: a is 0 or 1; R 1 is halo; b is 0 or 1; R 2 is halo; m is 0 or 1; R 4 is selected from hydrogen and (1-4C)alkyl; s is 0, 1 or 2; Ar 1 represents a phenylene group substituted with (R 5 ) q where q is 0 or an integer from 1 to 4 and each R 5 is independently selected from halo, hydroxy, (1-4C)alkyl, and (1-4C)alkoxy; t is 0, 1 or 2; n is 0 or an integer from 1 to 3; p is 0 or 1; and R 7 and R 8 are independently hydrogen or (1-4C)alkyl; wherein each alkyl group in R 5 , R 7 , and R 8 is optionally substituted with 1 to 5 fluoro substituents; or a pharmaceutically acceptable salt or stereoisomer thereof.