Using COC(=O)c1c(C)sc2c1c(=O)n(C)c(=O)n2C(C)C to produce Cc1sc2c(c1C(=O)O)c(=O)n(C)c(=O)n2C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.