You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a serine protease inhibitor. Please represent the molecule in SMILES.
user
COC(=O)C(Cc1cccc(CNC(=O)OCc2ccccc2)c1)NC(=O)OC(C)(C)C
assistant