Using OCCc1ccc(Nc2nc(-c3cccc(Cl)c3)nc3c2CCC3)cc1 to produce O=CCc1ccc(Nc2nc(-c3cccc(Cl)c3)nc3c2CCC3)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.