Using COc1ccc(C2(O)OC(=O)C(c3ccc4nsnc4c3)=C2Cc2ccccc2)cc1 to produce COc1ccc(C(=O)C(Cc2ccccc2)=C(C(=O)[O-])c2ccc3nsnc3c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.