[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][C][C][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][/C][=Branch1][#Branch1][=C][\\C][=Branch1][C][=O][O][/Br]"}, {"from": "gpt", "value": "The molecule is a derivative of bromoacrylic acid with cytostatic activity. Although the mechanism of action is unclear, penberol might inhibit tumor growth mediated through inhibition of the cell energetic metabolism."}]