Using OCCOCCCl, CCCC(=O)c1cnc2c(O)cccc2c1Nc1ccccc1C to produce CCCC(=O)c1cnc2c(OCCOCCO)cccc2c1Nc1ccccc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.