[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. 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)."}, {"from": "gpt", "value": "[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]"}]