[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a poly(ethylene glycol) containing 14 ethyleneoxy units. It has a role as an epitope."}, {"from": "gpt", "value": "[C][Branch2][Ring2][#Branch2][C][O][C][C][O][C][C][O][C][C][O][C][C][O][C][C][O][C][C][O][C][C][O][C][C][O][C][C][O][C][C][O][C][C][O][C][C][O][C][C][O][O]"}]