[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a glycosylgalactose comprising two D-galactose units joined via an alpha-(1->2) linkage. It has a role as an epitope."}, {"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][O][C@H1][Branch1][=Branch1][O][C][Ring1][=Branch1][O][C][O][O][O][O][O][O][O]"}]