Using CCOC(=O)Cn1nc2c3ccccc3n(Cc3ccc(-n4cccn4)cc3)cc-2c1=O to produce O=C(O)Cn1nc2c3ccccc3n(Cc3ccc(-n4cccn4)cc3)cc-2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.