Using CC(=O)[O-], C=CCC1(O)CN(C(=O)OC(C)(C)C)C[C@@H]1NC(=O)OCc1ccccc1 to produce CC(C)(C)OC(=O)N1C[C@H](NC(=O)OCc2ccccc2)C(O)(CCCO)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.