Using COC(=O)c1c(O)c2ccc(C)cc2sc1=O, NCC(=O)[O-] to produce Cc1ccc2c(O)c(C(=O)NCC(=O)O)c(=O)sc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.