Using CC(C)=CCN1CC(NC(=O)OC(C)(C)C)C(=O)N(CC(=O)c2ccccc2C)c2cc(C)ccc21 to produce CC(C)=CCN1CC(N)C(=O)N(CC(=O)c2ccccc2C)c2cc(C)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.