[{"from": "human", "value": "What can you tell me about this molecule? [C][C][O][C][Ring1][Ring2][=O]"}, {"from": "gpt", "value": "The molecule is a lactone compound with a four-membered ring. It is a colorless liquid with a pungent slightly sweet odor. Propiolactone is a disinfectant used for the sterilization of blood plasma, vaccines, tissue grafts, surgical instruments, and enzymes. It has been used against bacteria, fungi, and virus. It is currently FDA approved for its use as an indirect additive used in food contact substances. Propiolactone was first commercially available in the United States in 1958."}]