Using CC(=O)c1cccc(Oc2ccc(Nc3ncnc4ccn(CCOCCO)c34)cc2Cl)c1 to produce CC(O)c1cccc(Oc2ccc(Nc3ncnc4ccn(CCOCCO)c34)cc2Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.