Using COc1ccc2c(c1)C(=O)OC2[P+](c1ccccc1)(c1ccccc1)c1ccccc1, O=Cc1c(Cl)cncc1Cl to produce COc1ccc2c(c1)C(=O)OC2=Cc1c(Cl)cncc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.