Update app.py

app.py

@@ -1,4 +1,5 @@
 import gradio as gr
+from transformers import AutoTokenizer, AutoModelForSeq2SeqLM
 
 from rdkit.Chem import Draw
 from rdkit import Chem
@@ -6,7 +7,7 @@ import selfies as sf
 
 sf_input
 def greet1(name):
-   tokenizer = AutoTokenizer.from_pretrained("zjunlp/MolGen")
+    tokenizer = AutoTokenizer.from_pretrained("zjunlp/MolGen")
     model = AutoModelForSeq2SeqLM.from_pretrained("zjunlp/MolGen")
     
     sf_input = tokenizer(name, return_tensors="pt")