Using CCN(CC)CC, O=C(N[C@@H](C(=O)O)c1ccccc1)OCc1ccccc1 to produce NC(=O)[C@H](NC(=O)OCc1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.