Using CI, COc1ccc(-n2c(=NC#N)[nH]c3cnc4ccc(Br)cc4c32)cn1 to produce COc1ccc(-n2c(=NC#N)n(C)c3cnc4ccc(Br)cc4c32)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.