Using CCCCBr, COc1ccc(Cl)cc1C(=O)Nc1nc2c(s1)OCCC2 to produce CCCCn1c2c(s/c1=N\C(=O)c1cc(Cl)ccc1OC)OCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.