Using COc1cccc(Sc2c(C(=O)O)sc3cc(Cn4cnc5cnccc54)ccc23)c1, OO to produce COc1cccc(S(=O)c2c(C(=O)O)sc3cc(Cn4cnc5cnccc54)ccc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.