You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: It belongs to the oxytocin antagonist class of molecules.
user
O=C(O)c1ccc2c(c1)N(C(=O)c1ccc(C3CCCCC3)cc1)Cc1cccn1C2.[Na]
assistant