Using C1CCOC1, Cc1ccc(S(=O)(=O)n2ccc3cccnc32)cc1 to produce Cc1ccc(S(=O)(=O)n2c(C=O)cc3cccnc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.