Using CC(C)C[C@@H](C(=O)OCc1ccccc1)N(COC(=O)C(C)(C)C)C(=O)[C@H](CCc1ccccc1)NC(=O)CN1CCOCC1 to produce CC(C)C[C@@H](C(=O)O)N(COC(=O)C(C)(C)C)C(=O)[C@H](CCc1ccccc1)NC(=O)CN1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.