Using CCCC[Sn](CCCC)(CCCC)c1cccnc1, Ic1nc(Cc2ccccc2)cs1 to produce c1ccc(Cc2csc(-c3cccnc3)n2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.