Using COS(=O)(=O)OC, CC(C)(C)c1ccc(N2C(=O)c3ccccc3C2=O)cc1O to produce COc1cc(N2C(=O)c3ccccc3C2=O)ccc1C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.