Using ClCCCCc1ccccc1, [O-]P(OCc1ccccc1)OCc1ccccc1 to produce O=P(CCCCc1ccccc1)(OCc1ccccc1)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.