Using COC(=O)c1ccc(CO[C@H]2C[C@@H](C(=O)N[C@@H]3CCCc4ccccc43)N(C(=O)OC(C)(C)C)C2)cc1 to produce COC(=O)c1ccc(CO[C@@H]2CN[C@H](C(=O)N[C@@H]3CCCc4ccccc43)C2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.