Using Cc1cn2cccc(OCCCc3ccc(Cl)cc3Cl)c2n1, CNC to produce CNCc1c(C)nc2c(OCCCc3ccc(Cl)cc3Cl)cccn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.