[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a catechin with (2R,3R)-configuration. It has a role as an antioxidant. It is a polyphenol and a catechin. It is an enantiomer of a (+)-epicatechin."}, {"from": "gpt", "value": "[C][C@H1][Branch2][Ring2][Ring2][C@H1][Branch2][Ring1][C][O][C][=C][C][=Branch1][O][=C][C][=Branch1][=Branch1][=C][Ring1][=Branch1][Ring1][#Branch2][O][O][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][O]"}]