Using O=C1Cc2cc(C(=O)N3CCNCC3)ccc2N1, CCOC(=O)c1ccccc1 to produce O=C1Cc2cc(C(=O)N3CCN(C(=O)c4ccccc4)CC3)ccc2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.