diff --git a/mofa/difflinker_sample.py b/mofa/difflinker_sample.py
index 35fb5285..7e56b069 100644
--- a/mofa/difflinker_sample.py
+++ b/mofa/difflinker_sample.py
@@ -23,7 +23,26 @@ def sampler(nodes: List[str]=['CuCu'], n_atoms_list: List[int]=[8]):
     
                 # change to the line below to reproduce paper result
                 #subprocess.run(f'python -W ignore utils/difflinker_sample_and_analyze.py --linker_size {n_atoms} --fragments data/fragments_all/{node}/hMOF_frag.sdf --model models/geom_difflinker.ckpt --output {OUTPUT_DIR} --n_samples 20',shell=True)
+
+def sample_from_sdf(node: str='CuCu', n_atoms: int=8, input_path: str|Path = ):
+    print(f'Sampling {n_atoms} atoms...')
+    if node != 'V':
+        print(f'Now on node: {node}')
+        OUTPUT_DIR = f'mofa/output/n_atoms_{n_atoms}/{node}'
+        os.makedirs(OUTPUT_DIR,exist_ok=True)
+        # subprocess.run(f'python -W ignore utils/difflinker_sample_and_analyze.py --linker_size {n_atoms} --fragments data/fragments_all/{node}/hMOF_frag.sdf --model models/geom_difflinker.ckpt --output {OUTPUT_DIR} --n_samples 1',shell=True)
+        main_run(input_path=f"mofa/data/fragments_all/{node}/hMOF_frag_frag.sdf", model="mofa/models/geom_difflinker.ckpt", linker_size=str(n_atoms), output_dir=OUTPUT_DIR, n_samples=1, n_steps=None, anchors=None)
+    else:
+        raise NotAllowedElementError()
+
+class NotAllowedElementError(Exception):
+    def __init__(self, message="Element V is not allowed!"):
+        self.message = message
+        super().__init__(self.message)
+
 if __name__ == "__main__":
-    nodes = ['CuCu']
-    n_atoms_list = [8]
-    sampler(nodes, n_atoms_list)
+    # nodes = ['CuCu']
+    # n_atoms_list = [8]
+    # sampler(nodes, n_atoms_list)
+
+    sample_from_sdf('V')