Patent ID: 8722695

Claim:
A compound of formula (Ia) wherein: R 1 is halo, C 1-4 alkyl, C 1-4 alkoxy, halo-C 1-4 alkyl, halo-C 1-4 alkoxy, or cyano; R 2 is H, halo, cyano, C 1-4 alkyl or C 1-4 alkoxy; with the proviso that when R 2 is H, R 1 is not in the para position; X is CH or N; Y is CH or N; R 3 is C 1-4 alkyl; R 4 is H, deuterium, or C 1-4 alkyl; or R 3 and R 4 can be fused to form a C 3-4 spiro carbocyclyl group; or a pharmaceutically acceptable salt thereof.