Using ClCCCN1CCOCC1, O=C1CN=C(c2ccccc2Cl)c2cc(Br)c(O)cc2N1 to produce O=C1CN=C(c2ccccc2Cl)c2cc(Br)c(OCCCN3CCOCC3)cc2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.