Using C=CC[Sn](CCCC)(CCCC)CCCC, CCN1c2ncc(Br)cc2C(=O)Nc2c(C)cc(Cl)nc21 to produce C=CCc1cnc2c(c1)C(=O)Nc1c(C)cc(Cl)nc1N2CC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.