[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a member of allenes."}, {"from": "gpt", "value": "[C][O][C][=Branch1][C][=O][C][C][C][=C][=C][C][C@H1][C@@H1][Branch1][#Branch2][C@H1][Branch1][=Branch1][C][C][Ring1][Branch1][=O][O][/C][=C][/C@@H1][Branch1][O][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][O]"}]