Using CCCCOc1ccc2c(O)c(C(=O)OCC)c(=O)sc2c1, NCC(=O)[O-] to produce CCCCOc1ccc2c(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.