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
Cc1ccccc1N1CCN(S(=O)(=O)CC23CCC(CC2NC(=O)C(CCS(C)(=O)=O)NC(=O)OC(C)(C)C)C3(C)C)CC1
assistant