Using CCOP(=O)(OCC)c1ccc(-c2ccc(P(=O)(OCC)OCC)cc2)cc1 to produce O=P(O)(O)c1ccc(-c2ccc(P(=O)(O)O)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.