Using CC(C)c1csc(COc2ccn3c(=O)cc(O)nc3c2)n1, O=C([O-])O to produce CC(C)c1csc(COc2ccn3c(=O)c(C=O)c(O)nc3c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.