Using CC(C)(C)OC(=O)N1CC[C@@H]2c3ccccc3C(=O)NC[C@@H]2C1 to produce O=C1NC[C@@H]2CNCC[C@@H]2c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.