Using COc1ccc2c(c1)C(=O)CCC2, [PH3+]C(c1ccccc1)(c1ccccc1)c1ccccc1 to produce C=C1CCCc2ccc(OC)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.