Using Cc1c(-c2ccccn2)nc2c(Cl)cccc2c1Nc1cc(N2CCOCC2)cnc1N1CCOCC1, CCCC[Sn](C#N)(CCCC)CCCC to produce Cc1c(-c2ccccn2)nc2c(C#N)cccc2c1Nc1cc(N2CCOCC2)cnc1N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.