Using O=C(O)c1cc(Cc2n[nH]c(=O)c3ccccc23)ccn1, CC(C)OC1CCNCC1 to produce CC(C)OC1CCN(C(=O)c2cc(Cc3n[nH]c(=O)c4ccccc34)ccn2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.