Using O=C1CCC2(CC1)OCCO2, Clc1ccccc1C[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce Clc1ccccc1C=C1CCC2(CC1)OCCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.