Using CCCCOC(=O)[C@]1(NC(=O)c2cncc(NC(=O)OC(C)(C)C)c2)CCOC1 to produce CC(C)(C)OC(=O)Nc1cncc(C(=O)N[C@@]2(C(=O)O)CCOC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.