[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a linear amino trisaccharide consisting of a chain of beta-D-galactose, N-acetyl-beta-D-glucosamine and N-acetyl-D-galactosamine residues linked sequentially (1->4) and (1->3). It has a role as an epitope. It is an amino trisaccharide, a glucosamine oligosaccharide and a galactosamine oligosaccharide."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch2][Branch1][#C][C@@H1][Branch2][Ring2][Branch1][C@H1][Branch2][Ring1][#C][O][C@H1][Ring1][=Branch1][O][C@H1][C@H1][Branch2][Ring1][Ring2][C@H1][Branch1][#C][O][C][Branch1][#Branch2][C@@H1][Ring1][=Branch1][N][C][=Branch1][C][=O][C][O][C][O][O][C][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][O]"}]