Using Cn1cc(-c2cnc3[nH]ccc3c2)cn1, O=C(Cl)C(Cl)(Cl)Cl to produce Cn1cc(-c2cnc3[nH]cc(C(=O)C(Cl)(Cl)Cl)c3c2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.