Using CC(C)(C)OC(=O)CBr, O=c1[nH]c2cc(Cl)ccc2o1 to produce CC(C)(C)OC(=O)Cn1c(=O)oc2ccc(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.