[{"from": "human", "value": "Could you provide a description of this molecule? [C][S+1][Branch1][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N]"}, {"from": "gpt", "value": "The molecule is a sulfonium betaine that is a conjugate base of S-methyl-L-methionine obtained by the deprotonation of the carboxy group. It is a sulfonium betaine and a methyl-L-methionine. It is functionally related to a L-methioninate. It is a conjugate base of a S-methyl-L-methionine."}]