[{"from": "human", "value": "What can you tell me about this molecule? [C][O][C][=C][Branch2][Ring2][Branch1][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C][Branch1][Branch1][C][Ring1][=Branch1][=O][C][C][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C]"}, {"from": "gpt", "value": "The molecule is a racemate comprising equimolar amounts of (R)- and (S)-donepezil. A centrally acting reversible acetylcholinesterase inhibitor, its main therapeutic use is in the treatment of Alzheimer's disease where it is used to increase cortical acetylcholine. It has a role as an EC 3.1.1.7 (acetylcholinesterase) inhibitor, a nootropic agent and an EC 3.1.1.8 (cholinesterase) inhibitor. It contains a (R)-donepezil and a (S)-donepezil. It is a conjugate base of a donepezil (1+)."}]