[{"from": "human", "value": "Describe this molecule. [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][Branch1][Branch1][C][Ring1][#Branch1][=O][Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule appears as white to light yellow crystals or powder. Becomes anhydrous with reddening at 257-266 \u00b0F. "}]