Using c1ccc(N2CCNCC2)nc1, O=C1OC(CCCCCl)CN1c1ccccc1 to produce O=C1OC(CCCCN2CCN(c3ccccn3)CC2)CN1c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.