Using CCCC[Sn](CCCC)(CCCC)c1cn(C)cn1, Clc1ccc2c(cc(Br)n2Cc2ccccc2)n1 to produce Cn1cnc(-c2cc3nc(Cl)ccc3n2Cc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.