[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a Prostacyclin Receptor Agonist. The mechanism of action of selexipag is as a Prostacyclin Receptor Agonist."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][N][Branch2][Ring1][Ring2][C][C][C][C][O][C][C][=Branch1][C][=O][N][S][=Branch1][C][=O][=Branch1][C][=O][C][C][=C][N][=C][Branch1][#C][C][=Branch1][Ring2][=N][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]