Using CCOC(=O)[C@H]1[C@H]2[C@@H]1[C@](NC(=O)OC(C)(C)C)(C(=O)OCC)C[C@@H]2Sc1nc[nH]n1 to produce CC(C)(C)OC(=O)N[C@@]1(C(=O)O)C[C@H](Sc2nc[nH]n2)[C@H]2[C@H](C(=O)O)[C@H]21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.