Using BrC1CCCC1, CN(C)CC1(c2ccc(OCC3CNC3)cc2)CCOCC1 to produce CN(C)CC1(c2ccc(OCC3CN(C4CCCC4)C3)cc2)CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.