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