[{"from": "human", "value": "Provide a description of this molecule. [C][C][=C][C][=Branch2][Ring2][Branch2][=N][C][=Branch1][Ring2][=N][Ring1][=Branch1][O][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][C][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][C]"}, {"from": "gpt", "value": "The molecule is an Endothelin Receptor Antagonist. The mechanism of action of ambrisentan is as an Endothelin Receptor Antagonist."}]