Using CC1(C)OB(C2=CCSCC2)OC1(C)C, CC(C)(C)OC(=O)c1ccc(-c2cc(Br)cnc2N)cc1F to produce CC(C)(C)OC(=O)c1ccc(-c2cc(C3=CCSCC3)cnc2N)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.