This study is essential to determine the model capacity to predict the solubility of new DES molecules. First, the HBA molecules excluded were Betain, Tetrabutylammonium chloride, Allyltriphenylphosphonium bromide, Tetraethylammonium bromide, Tetramethylammonium chloride, Tetrabutylphosphonium bromide, Triethylmethylammonium chloride, Trioctylmethylammonium chloride, Trioctylmethylammonium bromide, Thymol, Menthol, and Benzyltrimethylammonium chloride. The test size obtained excluding these molecules was 30.25%. A weighted Tanimoto indicator is proposed to compare the similarity of the molecules with the ones contained in the training set. This score is determined for each tested molecule by performing a dot product of the five molecules with higher frequency in the training set and the Tanimoto values.