[{"from": "human", "value": "What can you tell me about this molecule? [C][C@][C][C][C@H1][Branch1][Ring2][C][Ring1][Branch1][C][Branch1][Branch1][C][Ring1][#Branch1][=O][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a fenchone that has 1S,4R stereochemistry. A colourless, oily liquid found in fennel oil, it is used in perfumery and as flavour in foods. It is an enantiomer of a (1R,4S)-fenchone."}]