Using NCCN1CCOCC1, Cn1c2c(c3cc(O)ccc31)CCC2=O to produce Cn1c2c(c3cc(O)ccc31)CCC2=NCCN1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.