[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an indane derivative in which the indane skeleton is substituted by geminal methyl groups at C-1, by a single methyl group at C-6, by an isopropyl group at C-3 and by a 3-carboxypropanoyl group at C-6. It is a member of indanes and a 4-oxo monocarboxylic acid."}, {"from": "gpt", "value": "[C][C][=C][C][=C][Branch1][S][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][O][C@H1][Branch1][=Branch2][C][C][Ring1][=C][Branch1][C][C][C][C][Branch1][C][C][C]"}]