[{"from": "human", "value": "Describe this molecule. [C][=N][C][=Branch2][Branch1][Branch1][=C][C][=Branch1][Ring2][=N][Ring1][=Branch1][N][Branch1][Branch1][C][=N][Ring1][=Branch1][C@H1][C@@H1][Branch2][Ring1][P][C@@H1][Branch2][Ring1][N][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][S+1][Branch1][N][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][C][=Branch1][C][=O][O][O][O][N]"}, {"from": "gpt", "value": "The molecule is a sulfonium compound that is S-adenosyl-L-methionine in which one of the methyl hydrogens has been replaced by a carboxy group. It has a role as an Escherichia coli metabolite. It is a sulfonium compound and an organic cation. It is functionally related to a S-adenosyl-L-methionine. It is a conjugate acid of a S-adenosyl-S-carboxymethyl-L-homocysteine dizwitterion."}]