Using CC(C)(C)c1ccccc1N1CCNCC1, O=C(O)c1ncoc1C1CCCCC1 to produce CC(C)(C)c1ccccc1N1CCN(C(=O)c2ncoc2C2CCCCC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.