[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a galactobiose comprising an alpha-D-galactopyranose residue and a D-galactopyranose residue joined via an alpha-(1->3) linkage. It has a role as an antigen, an epitope and a carbohydrate allergen."}, {"from": "gpt", "value": "[C][Branch2][Ring2][O][C@@H1][C@@H1][Branch2][Ring2][Branch1][C@@H1][Branch2][Ring1][S][C@H1][Branch2][Ring1][O][C@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@H1][C@H1][Branch1][#C][C@H1][Branch1][#Branch2][O][C][Branch1][Branch1][C@@H1][Ring1][=Branch1][O][O][C][O][O][O][O][O][O]"}]