Using O=CCCCCCCCCCBr, O=C(O)CCCCC[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce O=C(O)CCCC/C=C\CCCCCCCCCBr, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.