[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=Branch1][C][=O][C@][Branch2][Branch1][C][C][C][C@@H1][C@@][Ring1][Branch1][Branch2][Ring2][Branch2][C][C@@H1][Branch2][Ring1][Ring2][C][=C][C][C][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][C][C][C@@H1][Ring1][#C][Ring1][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][Branch1][C][C][C][C][O]"}, {"from": "gpt", "value": "The molecule is a Progesterone Agonist/Antagonist. The mechanism of action of ulipristal is as a Selective Progesterone Receptor Modulator."}]