Using CCCC[Sn](C#N)(CCCC)CCCC, COc1cncc(-c2ncc(N3CCOCC3)cc2Nc2c(C)c(-c3cc(C)ccn3)nc3c(Cl)cccc23)c1 to produce COc1cncc(-c2ncc(N3CCOCC3)cc2Nc2c(C)c(-c3cc(C)ccn3)nc3c(C#N)cccc23)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.