Using CN1CCNCC1, O=CC1(c2ccc(OCCCN3CCCC3)cc2)CCOCC1 to produce CN1CCN(CC2(c3ccc(OCCCN4CCCC4)cc3)CCOCC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.