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 that fulfills the requirement: The molecule is a oxytocin antagonist and belongs to the vasopressin antagonist class of molecules.
user
O=C(CCCCc1nnc(SCc2cccc(Cl)c2)n1CCc1ccccc1)NCc1ccc2c(c1)OCO2
assistant