Using CC1(C)OB(c2csc(C(N)=O)c2)OC1(C)C, COC1NC=C(C#N)c2c1c(Br)cn2C1CCCC1 to produce COc1ncc(C#N)c2c1c(-c1csc(C(N)=O)c1)cn2C1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.