Using Cc1ccc(S(=O)(=O)N2CCC[C@H]2C(=O)N[C@@H](Cc2ccccc2)C(=O)O)cc1, CCOC(=O)CCN to produce CCOC(=O)CCNC(=O)C(Cc1ccccc1)NC(=O)[C@@H]1CCCN1S(=O)(=O)c1ccc(C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.