Fix SDF reader

    raw_df = next(load_csv_files([input_file+".csv"], shard_size=None))

    # Structures are stored in .sdf file

    print("Reading structures from %s." % input_file)

    suppl = Chem.SDMolSupplier(str(input_file), removeHs=False)

    suppl = Chem.SDMolSupplier(str(input_file), False, False, False)

    df_rows = []

    for ind, mol in enumerate(suppl):

      if mol is not None:

echo "Pulling GDB7 dataset from deepchem"

#wget http://deepchem.io.s3-website-us-west-1.amazonaws.com/datasets/gdb7.tar.gz

wget http://deepchem.io.s3-website-us-west-1.amazonaws.com/datasets/gdb7.tar.gz

echo "Extracting gdb7 structures"

tar -zxvf gdb7.tar.gz