Using CCOC(=O)C(Cc1nc(-c2ccccc2)ccc1NC(=O)OC(C)(C)C)N=C(c1ccccc1)c1ccccc1 to produce CCOC(=O)C(N)Cc1nc(-c2ccccc2)ccc1NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.