Using Nc1ccc2c(c1)OCCO2, Clc1cccnc1N1CCc2c(Cl)ncnc2C1 to produce Clc1cccnc1N1CCc2c(ncnc2Nc2ccc3c(c2)OCCO3)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.