Using O=C(O)CNc1cc(Cl)c(Cl)cc1O, C=CC(=O)NCCC1CCNCC1 to produce C=CC(=O)NCCC1CCN(C(=O)CNc2cc(Cl)c(Cl)cc2O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.