Using Cc1cnc(CN)cn1, O=C(O)CCc1cnoc1-c1ccc(Cl)cc1 to produce Cc1cnc(CNC(=O)CCc2cnoc2-c2ccc(Cl)cc2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.