Using CCOC(=O)C=P(c1ccccc1)(c1ccccc1)c1ccccc1, OCc1cnc(Cl)cn1 to produce CCOC(=O)/C=C/c1cnc(Cl)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.