Fixed bad python.

rest-api-service/app/api_v1_0/routes.py

@@ -192,7 +192,7 @@ def get_materials(page, per_page):
     user_elements = search_by.get('element')
     elements = None
     if user_formula is not None:
-        parts = [element if elementreformat_user_formula(user_formula)
+        parts = reformat_user_formula(user_formula)
         parts = [part if _atom_label_with_number.match(part) else '%s1' % part for part in parts]
         if exclusive:
             match_query['formula_reduced_keyword'] = dict(query="".join(sort_elements(elements)))