[{"from": "human", "value": "Provide a description of this molecule. [C][C][O][C][Ring1][Ring2][=O]"}, {"from": "gpt", "value": "The molecule is used for vaccines, tissue grafts, surgical instruments, and enzymes, as a sterilant of blood plasma, water, milk, and nutrient broth, and as a vapor-phase disinfectant in enclosed spaces. Acute (short-term) inhalation exposure to beta-propiolactone causes severe irritation of the eyes, nose, throat, and respiratory tract in humans. Acute dermal exposure may cause irritation of the skin, blistering, or burns in humans. Contact with the eyes may cause permanent corneal opacification. Burns of the mouth and stomach may occur in humans following acute exposure via ingestion. No information is available on the chronic (long-term), reproductive, developmental, or carcinogenic effects of beta-propiolactone in humans. Squamous cell carcinomas of the forestomach have been reported in orally exposed rats. In dermally exposed rodents, skin tumors have been observed. The International Agency for Research on Cancer (IARC) has classified beta-propiolactone as a Group 2B, possible human carcinogen."}]