Using CC(Br)CCC(C)Br, CC(C)(C)OC(=O)NCCc1c[nH]c2ccc(O)cc12 to produce CC(Br)CCC(C)Oc1ccc2[nH]cc(CCNC(=O)OC(C)(C)C)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.