Using Cc1cc[n+](CCO)cc1, COCCOCCn1c2ccccc2c2cc(C=O)ccc21 to produce COCCOCCn1c2ccccc2c2cc(/C=C/c3cc[n+](CCO)cc3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.