Using O=C(c1ccc(Cl)nn1)N1CCOCC1, Oc1ccc2c(c1)CCN(C1CCC1)CC2 to produce O=C(c1ccc(Oc2ccc3c(c2)CCN(C2CCC2)CC3)nn1)N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.