Using O=C(CS)c1ccc(NS(=O)(=O)c2ccc(OC(F)(F)F)cc2)cc1, O=C(O)c1ccccn1 to produce O=C(CSC(=O)c1ccccn1)c1ccc(NS(=O)(=O)c2ccc(OC(F)(F)F)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.