Using COc1ccc2c(c1)C(=O)C(Cc1cccc(NS(=O)(=O)C(F)(F)F)c1)CC2 to produce O=C1c2cc(O)ccc2CCC1Cc1cccc(NS(=O)(=O)C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.