[{"from": "human", "value": "Describe this molecule. [C][N][C][=Branch1][C][=O][C][=C][Branch2][Ring1][Ring1][N][Branch1][Branch1][C][Ring1][#Branch1][=O][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][#N][N][C][C][C][C@H1][Branch1][Ring2][C][Ring1][=Branch1][N]"}, {"from": "gpt", "value": "The molecule is a selective, orally-bioavailable inhibitor of enzymatic activity of dipeptidyl peptidase-4 (DPP-4). Chemically, alogliptin is prepared as a benzoate salt and exists predominantly as the R-enantiomer (>99%). It undergoes little or no chiral conversion in vivo to the (S)-enantiomer. FDA approved January 25, 2013."}]