[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][N][C][=Branch1][C][=O][C][=C][Branch1][Branch2][N][C][Ring1][#Branch1][=N][Ring1][#Branch2][N][=C][N][Ring1][Branch2]"}, {"from": "gpt", "value": "The molecule is a nucleobase analogue obtained by addition of an etheno group across positions 1 and N2 of guanine. It is an imidazopurine and a nucleobase analogue. It is functionally related to a guanine."}]