You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a endothelin antagonist and is hypertension treatment.
user
O=C(O)C(Cc1ccccc1O)NC(=O)C(c1ccccc1)c1ccccc1
assistant