Using Ic1n[nH]c2cnc(-c3cccnc3)cc12, CCCCC[Sn](CCCC)(CCCCC)c1ccccn1 to produce c1ccc(-c2n[nH]c3cnc(-c4cccnc4)cc23)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.