[{"from": "human", "value": "Provide a description of this molecule. [C][O][C][=C][Branch2][Ring2][Branch1][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C@H1][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 2-[(1-benzylpiperidin-4-yl)methyl]-5,6-dimethoxyindan-1-one that has R configuration. It is a conjugate base of a (R)-donepezil(1+). It is an enantiomer of a (S)-donepezil."}]