Using CCCCBr, CCCCOC(P(=O)(OCC)OCC)P(=O)(OCC)OCC to produce CCCCOC(CCCC)(P(=O)(OCC)OCC)P(=O)(OCC)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.