[{"from": "human", "value": "Describe this molecule. [C][C][C][=Branch1][#Branch2][=C][Branch1][=Branch1][N][C][=N][Ring1][=Branch1][N][N][C][=N][Ring1][#Branch2]"}, {"from": "gpt", "value": "The molecule is a methyladenine in which the methyl substituent is located at position 4."}]