Using CCCC[Sn](CCCC)(CCCC)c1ccnc(C(C)(C)O)c1, CI to produce CCCC[Sn](CCCC)(CCCC)c1ccnc(C(C)(C)OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.