You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a integrin antagonist.
user
Cn1c(=O)n(-c2ccc(CC(NC(=O)c3c(Cl)cccc3Cl)C(=O)O)cc2)c(=O)c2ncccc21
assistant