[{"from": "human", "value": "Provide a description of this molecule. [C][O][C][O][C][O][Ring1][=Branch1]"}, {"from": "gpt", "value": "Transparent crystals or white crystalline solid with a pleasant odor resembling the odor of chloroform. Melts at 62 \u00b0C; boils at 115 \u00b0C without polymerization. The cyclic trimer of formaldehyde."}]