Using C[C@H](C(=O)O)c1ccccc1, CCCC(C)COc1ccc([C@@H](N)COC(C)=O)cc1 to produce CCCC(C)COc1ccc([C@H](COC(C)=O)NC(=O)[C@@H](C)c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.