Using Sc1ccncc1, COc1cc2c(Nc3ccc(Br)cc3F)ncnc2cc1OCC1CO1 to produce COc1cc2c(Nc3ccc(Br)cc3F)ncnc2cc1OCC(O)CSc1ccncc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.