You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a oxytocin antagonist. Use the above information to create a molecule.
user
CC(C)CC1C(=O)NC(C2Cc3ccccc3C2)C(=O)N1C(C(=O)NC(C)C)c1ccc(N2CCCC2)cc1
assistant