[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][N][C@@H1][Branch1][Ring1][C][=O][C@H1][Branch1][O][C@H1][Branch1][#Branch1][C@@H1][Branch1][Ring1][C][O][O][O][O][C@H1][C@@H1][Branch1][P][C@H1][Branch1][=N][C@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a type 1 core O-glycan with potential immunotherapeutic property. Thomsen-Friedenreich (TF) antigen, a galactose disaccharide, is normally O-linked to serine or threonine residue of mucins (MUC1), a transmembrane glycoprotein overexpressed on epithelial cell surface of a variety of tumor cells. The expression of this antigen is associated with tumor cell adhesion, tissue invasion and aggressiveness. When administered in a vaccine formulation, TF antigen may stimulate a cytotoxic T cell response against tumors expressing TF epitope, which may result in a reduction in tumor size."}]