| abstract |
A compound of Formula (I) or a pharmaceutically acceptable salt thereof **(See Formula)** wherein n is 1 or 2; m is 0 or 1; R1 is H or F; and R2 is pyridyl optionally substituted with one or two substituents independently selected from fluoro, chloro, bromo, cyano, methyl optionally substituted with one or more fluoro, and methoxy optionally substituted with one or more fluoro, or R2 is pyrazinyl optionally substituted in the meta position. with a substituent selected from fluoro, chloro, bromo, cyano, methyl optionally substituted with one or more fluoro, and methoxy optionally substituted with one or more fluoro, or R2 is pyrazinyl optionally substituted in the para position with fluoro or chloro, wherein, when R1 is H, R2 is substituted, and when m is 0, R1 is H. |