Derivatives of pyrazole-substituted amino-heteroaryl compounds

A compound of Formula I:

• or a pharmaceutically acceptable salt thereof, wherein:
• R1 and R2 are each independently selected from Cl, CH3 and CD3;
• R3 is CH3 or CD3;
• X1a, X1b, X2a, X2b, X3a, X3b, X4a, X4b, and X5 are each independently selected from hydrogen and deuterium;
• Y1 is hydrogen or deuterium;
• and
• Y2 is hydrogen or deuterium;
• provided that when R1 and R2 are each independently selected from Cl and CH3, each or X1a, X1b, X2a, X2b, X3a, X3b, X4a, X4b, and X5 is hydrogen and each of Y1 and Y2 is hydrogen, then R3 is CD3.