[{"from": "human", "value": "Generate a molecule based on this description. The molecule is the simplest member of the class of flavans that is chromane substituted by a phenyl group at position 2."}, {"from": "gpt", "value": "[C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][Ring1][#Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]