[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch1][C][C][C@@H1][Branch2][Ring1][#C][C][=Branch1][C][=O][O][C][C][Branch1][Ring1][C][O][O][C][N][C][=N][C][=C][Ring1][Branch1][N][=C][Branch1][=Branch1][N][C][Ring1][=Branch1][=O][N][N]"}, {"from": "gpt", "value": "The molecule is the L-valinyl ester of ganciclovir, into which it is rapidly converted by intestinal and hepatic esterases. It is a synthetic analogue of 2'-deoxyguanosine. It has a role as a prodrug and an antiviral drug. It is a member of purines and a L-valyl ester. It is functionally related to a guanine and a ganciclovir."}]