Using COCCN(c1ccccc1)c1nc(N)nc(-c2noc(-c3ccc(COS(C)(=O)=O)nc3)n2)n1, OCC(F)(F)F to produce COCCN(c1ccccc1)c1nc(N)nc(-c2noc(-c3ccc(COCC(F)(F)F)nc3)n2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.