[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a hydrate that is tin dichloride (anh.) combined with 2 mol eq. of water. It has a role as a food antioxidant, a food colour retention agent and a reducing agent. It contains a tin(II) chloride (anhydrous)."}, {"from": "gpt", "value": "[O].[O].[Cl-1].[Cl-1].[Sn+2]"}]