Using COC(=O)C(C)(C)Nc1cccc(C2Nc3ccc(S(C)(=O)=O)cc3CC2(C)C)c1 to produce CC(C)(Nc1cccc(C2Nc3ccc(S(C)(=O)=O)cc3CC2(C)C)c1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.