Using C=CCC1CCN(C(=O)OC(C)(C)C)CC1, Brc1cnc2ccccc2c1 to produce CC(C)(C)OC(=O)N1CCC(CCCc2cnc3ccccc3c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.