Using F[B-](F)(F)F, c1cnc(-c2cccc(-c3cnc(-c4cccnc4)s3)n2)nc1 to produce Fc1nc(-c2cccnc2)sc1-c1cccc(-c2ncccn2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.