Using Brc1ccncc1, CCCC[Sn](CCCC)(CCCC)c1ccc2cnn(CCN(C)C)c2c1 to produce CN(C)CCn1ncc2ccc(-c3ccncc3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.