Using COC(=O)C(C)[C@H](NC(=O)OC(C)(C)C)c1nc2cc(C(C)(C)C)ccc2[nH]1 to produce CC(C(=O)O)[C@H](NC(=O)OC(C)(C)C)c1nc2cc(C(C)(C)C)ccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.