You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a vasopressin antagonist and belongs to the oxytocin antagonist class of molecules.
user
COC(=O)N(C)C1(CC2CCCCC2)C(=O)N(S(=O)(=O)c2ccc([N+](=O)[O-])cc2OC)c2ccc(Cl)cc21
assistant