Using O=C(Cl)Oc1ccccc1, COc1c(N)cc(C(C)(C)C)cc1NS(C)(=O)=O to produce COc1c(NC(=O)Oc2ccccc2)cc(C(C)(C)C)cc1NS(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.