Using CC(=O)OC(C)=O, CS(=O)(=O)c1ccc(Oc2cc3nc(-c4ccc(Br)cn4)[nH]c3cc2C2CCCN2)cc1 to produce CS(=O)(=O)c1ccc(Oc2cc3nc(-c4ccc(Br)cn4)[nH]c3cc2C2CCCN2CC=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.