You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a factor xia inhibitor.
user
C=CCC(NC(=O)OC(C)(C)C)c1cc(-c2ccc(N(C)C(=O)[O-])cc2[N+](=O)[O-])c(Cl)nn1
assistant