[{"from": "human", "value": "Please give me some details about this molecule. [C][/C][=C][/C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][C]"}, {"from": "gpt", "value": "The molecule is a commonly used fragrance added to many commercially available products, and occurs naturally in the essential oils of plants such as ylang-ylang. It is also a significant dermatologic sensitizer and allergen, and as a result has been restricted to 200 p.p.m. since 1998 according to guidelines issued by the fragrance industry. Allergic reactivity to Isoeugenol may be identified with a patch test."}]