Using CCOC(=O)c1cccn2c(-c3ccc(Nc4nc5ccc(Cl)cc5s4)cc3)nnc12 to produce O=C(O)c1cccn2c(-c3ccc(Nc4nc5ccc(Cl)cc5s4)cc3)nnc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.