Using CCCN, CC(C)(C)OC(=O)N[C@@]1(C(=O)O)C[C@@H]1c1ccccc1 to produce CCCNC(=O)[C@]1(N)C[C@@H]1c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.