Using COC(=O)CCCBr, c1ccc(C2(c3ccc4nc(-c5ccc6[nH]ccc6c5)sc4n3)CC2)cc1 to produce COC(=O)CCCn1ccc2cc(-c3nc4ccc(C5(c6ccccc6)CC5)nc4s3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.