[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][C][C][C][C@@H1][Branch2][Ring2][Branch2][/C][=C][/C@H1][C@@H1][Branch2][Ring1][S][C][C][=Branch2][Ring1][Ring1][=C][Ring1][Branch1][C][C][C][C][C][C][C][=Branch1][C][=O][O][C][C][C][C][O][C][=Branch1][C][=O][C][C][C][O][O]"}, {"from": "gpt", "value": "The molecule is under investigation in clinical trial NCT00059657 (Efficacy/safety of Ecraprost in Lipid Emulsion for Treatment of Critical Leg Ischemia Due to Peripheral Arterial Disease)."}]