You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a oxytocin antagonist.
user
COc1cc(C(=O)N2Cc3ccc(C(=O)NCCCn4ccnc4)n3Cc3ccccc32)ccc1-c1cccc2ccccc12
assistant