bug fixing

app.py

@@ -1120,12 +1120,12 @@ def process_input(smiles_input=None, file_obj=None, show_linear=False,
                 one_letter = f"cyclo({one_letter})"
             
             # Create cyclic structure visualization
-            img_cyclic = annotate_cyclic_structure(mol, sequence)
+            img_cyclic = annotate_cyclic_structure(mol, three_letter)
             
             # Create linear representation if requested
             img_linear = None
             if show_linear:
-                fig_linear = create_enhanced_linear_viz(sequence, smiles)
+                fig_linear = create_enhanced_linear_viz(three_letter, smiles)
                 buf = BytesIO()
                 fig_linear.savefig(buf, format='png', bbox_inches='tight', dpi=300)
                 buf.seek(0)