Using CCOC(=O)C(OCC)[P+](c1ccccc1)(c1ccccc1)c1ccccc1, Cc1cc(OCc2ccccc2)ccc1C=O to produce CCOC(=O)/C(=C/c1ccc(OCc2ccccc2)cc1C)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.