Using COC(=O)[C@H](O)[C@H](Cc1ccccc1)NC(=O)c1cc(C(=O)N[C@H](C)c2ccccc2)cc(N(C)S(C)(=O)=O)c1 to produce C[C@@H](NC(=O)c1cc(C(=O)N[C@@H](Cc2ccccc2)[C@@H](O)C(=O)O)cc(N(C)S(C)(=O)=O)c1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.