[{"from": "human", "value": "Describe this molecule. [C][N][C][=C][Branch1][Branch1][N][=C][Ring1][Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is a histidine derivative that has a methyl group bound to the nitrogen at position 1 and results from the metabolism of the dipeptide anserine. Urinary levels of 1-methylhistidine may be indicative of myofibrillar protein degradation or a high protein diet."}]