[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch2][Ring2][Branch1][C@H1][Branch2][Ring1][S][C@H1][Branch2][Ring1][#Branch2][O][C@@H1][Ring1][=Branch1][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is an O(4')-glycosyl-L-tyrosine in which the glycosyl group is specified as N-acetyl-alpha-D-galactosaminyl."}]