[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a polymer."}, {"from": "gpt", "value": "[O-1][As][=Branch1][C][=O][Branch1][C][O-1][O-1].[O-1][As][=Branch1][C][=O][Branch1][C][O-1][O-1].[Ca+2].[Ca+2].[Ca+2]"}]