[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][C][C][Branch2][Ring1][=Branch1][C][C][C][C][O][C][C][C][C][C][Branch1][C][C][Branch1][C][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a dialkyl ether dicarboxylic acid with antihyperlipidemic activity. In animal models gemcabene increased high density lipoprotein (HDL) cholesterol levels and increased HDL particle size. Low-density lipoprotein cholesterol, trigylcerides, and apolipoprotein C-III levels were decreased as well. In human test subjects, the HDL lowering effect of gemcabene was only seen in patients with high (>200 mg/dl) levels of triglycerides."}]