You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? It belongs to the endothelin antagonist class of molecules.
user
CN1C(OC(=O)O)=C(Sc2ccc3c(c2)OCO3)c2ccccc2S1(=O)=O
assistant