[{"from": "human", "value": "What can you tell me about this molecule? [C][C][O][C][=Branch1][C][=O][C@H1][Branch1][=N][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][N]"}, {"from": "gpt", "value": "The molecule is an L-tyrosyl ester that is L-tyrosine in which the hydrogen of the carboxy group has been replaced by an ethyl group. It is an ethyl ester and a L-tyrosyl ester."}]