Using Clc1nc2c(Cl)c(Cl)c(Cl)c(Cl)c2[nH]1, ClCOCCOCc1ccccc1 to produce Clc1c(Cl)c(Cl)c2c(nc(Cl)n2COCCOCc2ccccc2)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.