Update app.py

app.py

@@ -34,7 +34,7 @@ Draw.MolToFile(m,'mol.png')
 show(compound_smiles)
 HtmlFile = open("viz.html", 'r', encoding='utf-8')
 source_code = HtmlFile.read() 
-c1,c2=st.columns(2)
+c1,c2=st.beta_columns(2)
 with c1:
   st.write('Molecule :coffee:')
   st.image('mol.png')