Using CCc1ccc2c(-c3ccc(C(N)=O)cc3)c(CCCCCC(=O)O)c(C)nn12 to produce CCc1ccc2c(-c3ccc(C(N)=O)cc3)c(CCCCCC(=O)[O-])c(C)nn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.