You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: It belongs to the endothelin antagonist class of molecules.
user
CCCCN(CCCCBr)C(=O)CN1CC(c2ccc3c(c2)OCO3)C(C(=O)O)C1c1ccc(OC)cc1
assistant