Using COC(=O)Cc1c(C)n(Cc2ccc(S(C)=O)cc2)c2ncccc12 to produce Cc1c(CC(=O)O)c2cccnc2n1Cc1ccc(S(C)=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.