Using OB(O)c1ccncc1, CC(C)(C)[Si](C)(C)O[C@H]1CC[C@@H](N2CCC(Cc3c(Cl)cc(OS(=O)(=O)C(F)(F)F)cc3Cl)C2=O)CC1 to produce CC(C)(C)[Si](C)(C)O[C@H]1CC[C@@H](N2CCC(Cc3c(Cl)cc(-c4ccncc4)cc3Cl)C2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.