[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=C][N][C][=Branch1][C][=O][C][=C][Branch1][Branch2][N][=C][Ring1][#Branch1][N][Ring1][#Branch2][N][Branch1][Branch1][C][=N][Ring1][Branch2][C@H1][C@@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a nucleoside analogue having 6-methyl-3,5-dihydro-9H-imidazo[1,2-a]purin-9-one as the modified nucleobase. It is functionally related to a guanosine."}]