| CPC C07D 209/08 (2013.01) | 17 Claims |
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1. A compound of Formula (IB):
![]() or a pharmaceutically acceptable salt thereof; wherein
R1 is halo;
R2 is methyl or halomethyl;
R3 is methyl, halomethyl, or benzyl; and
m is 1, 2, or 3.
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