Using COC(=O)c1sc(N2CC[C@H](NC(=O)OCc3ccccc3)[C@H](OC)C2)cc1C(C)O to produce COC(=O)c1sc(N2CC[C@H](NC(=O)OCc3ccccc3)[C@H](OC)C2)cc1C(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.