Using CCS(=O)(=O)N(Cc1cccnc1)c1ccc(C)c(I)c1, O=C[O-] to produce CCS(=O)(=O)N(Cc1cccnc1)c1ccc(C)c(C=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.