Using C#CCBr, CC(C)(C)c1nn(-c2cc3[nH]c(=O)sc3cc2Cl)c(=O)o1 to produce C=CCn1c(=O)sc2cc(Cl)c(-n3nc(C(C)(C)C)oc3=O)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.