[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a terpene ketone derived from ring cleavage of the apo carotenoid beta-ionone. It has a role as a fragrance. It is functionally related to a beta-ionone."}, {"from": "gpt", "value": "[C][C][=Branch1][S][=C][C][C][/C][=Branch1][=Branch2][=C][/C][=C][/C][=Branch1][C][=O][C][/C][C]"}]