Using CCCO, NC(=O)c1c(Nc2ccc(C(=O)N3CCOCC3)cc2)cc(Cl)nc1Cl to produce CCCOc1nc(Cl)cc(Nc2ccc(C(=O)N3CCOCC3)cc2)c1C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.