Using Cc1ccc(C)c(O)c1C, O=C([O-])CN(CCN(CC(=O)[O-])CC(=O)[O-])CCN(CC(=O)[O-])CC(=O)[O-] to produce CC1=CC(=O)C(C)=C(C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.