Using [N-]=[N+]=NCCc1ccccc1C1N=C(N)c2ccccc2N1, Cl[Sn]Cl to produce NCCc1ccccc1C1N=C(N)c2ccccc2N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.