Antagonists of the muscarinic acetylcholine receptor m4

A compound of formula (V):

• or a pharmaceutically acceptable salt thereof, wherein:
• G1 is
• G1a is
• R is hydrogen, C1-4alkyl, C3-4cycloalkyl, or —C1-3alkylene-C3-4cycloalkyl;
• R1a is hydrogen, C1-4alkyl, C1-4fluoroalkyl, —OC1-4alkyl, —OC1-4fluoroalkyl, —OC3-6cycloalkyl, —OCH2C3-6cycloalkyl, —SO2C1-4alkyl, —SO2C3-6cycloalkyl, phenyl, or C3-6cycloalkyl, wherein the phenyl and each C3-6cycloalkyl are optionally substituted with 1-4 substituents independently selected from the group consisting of halogen, cyano, C1-4alkyl, C1-4haloalkyl, —OC1-4alkyl, and —OC1-4haloalkyl;
• R1b is hydrogen, halogen, cyano, C1-4alkyl, C1-4fluoroalkyl, or C3-6cycloalkyl;
• or alternatively, R1a and R1b, together with the atoms to which they attach, form a five- or six-membered unsaturated or partially unsaturated carbocyclic or heterocyclic ring, the carbocyclic or heterocyclic ring being unsubstituted or substituted with 1-4 substituents independently selected from the group consisting of halogen, cyano, C1-4alkyl, C1-4fluoroalkyl, C2-4alkenyl, C3-6cycloalkyl, and —C1-3alkylene-C3-4cycloalkyl;
• R2 is CF3 or CHF2;
• R2a, at each occurrence, is independently halogen, C1-4alkyl, C1-4fluoroalkyl, —OC1-4alkyl, or —OC1-4fluoroalkyl;
• n is 0, 1, or 2.
• R3 is -L1-G2;
• L1 is CH2;
• and
• G2 is