Using c1nc[nH]n1, O=C(CCl)Nc1n[nH]c2cc(Cl)ccc12 to produce O=C(Cn1cncn1)Nc1n[nH]c2cc(Cl)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.