[{"from": "human", "value": "Provide a description of this molecule. [C][=N][C][=N][C][=N][C][=Branch1][#Branch1][=C][Ring1][=Branch1][N][Ring1][=Branch2][N]"}, {"from": "gpt", "value": "The molecule is a purine nucleobase with an amine group attached to the carbon at position 6. Adenine is the precursor for adenosine and deoxyadenosine nucleosides."}]