Using BrCCOCCOCCOCCBr, CCCc1c(OCC(=O)OCC)ccc(C(C)=O)c1O to produce CCCc1c(OCC(=O)OCC)ccc(C(C)=O)c1OCCOCCOCCOCCBr, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.