Using C=CC1(CCC(C)=O)Cc2cc(OCC(=O)OC)c(Cl)c(Cl)c2C1=O to produce C=CC12CCC(=O)C=C1c1c(cc(OCC(=O)O)c(Cl)c1Cl)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.