Using CC(C)(C)OC(=O)N1CCCC2(C1)C(=O)N=CN2c1ccccc1 to produce CC(C)(C)OC(=O)N1CCCC2(C1)C(=O)NCN2c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.