Using COC[P+](c1ccccc1)(c1ccccc1)c1ccccc1, O=C1CCC(NC(=O)OCc2ccccc2)CC1 to produce COC=C1CCC(NC(=O)OCc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.