--- a/ob_filter.py	Wed Mar 25 20:39:01 2020 +0000
+++ b/ob_filter.py	Thu Apr 09 13:55:49 2020 +0000
@@ -40,7 +40,7 @@
     for mol in pybel.readfile('sdf', args.input):
         for key, elem in filters.items():
             # map the short description to the larger metadata names stored in the sdf file
-            property = cheminfolib.ColumnNames[key]
+            property = cheminfolib.ColumnNames.get(key, key)
             min = elem[0]
             max = elem[1]
             if float(mol.data[property]) >= float(min) and float(mol.data[property]) <= float(max):
@@ -113,7 +113,7 @@
         # Check if the sdf file contains all of the required metadata to invoke the precalculation filtering
         mol = next(pybel.readfile('sdf', args.input))
         for key, elem in filters.items():
-            property = cheminfolib.ColumnNames[key]
+            property = cheminfolib.ColumnNames.get(key, key)
             if not property in mol.data:
                 break
         else: