Update MutagenLou2023 Preprocessing.py

MutagenLou2023 Preprocessing.py

@@ -49,15 +49,20 @@ for id, alert in problems:
     print(f"ID: {id}, problem: {alert[0]}")
 
 # Result interpretation
+
+# - WARNING: not removing hydrogen atom without neighbors : There are hydrogen atoms in the molecule that are not bonded to any other atoms.
+
 #  - Can't kekulize mol: The error message means that kekulization would break the molecules down, so it couldn't proceed
 #  It doesn't mean that the molecules are bad, it just means that normalization failed 
 
-#  Unusual charge on atom 0 number of radical electrons set to zero: 
-#  Aborted reionization due to unexpected situation: 
+#  - Unusual charge on atom 0 number of radical electrons set to zero: It means that if nValence <0, sets it 0 and shows the warning
+# https://github.com/rdkit/rdkit/blob/d6171aaade470100605f3e99918d31cd46a09199/Code/GraphMol/MolOps.cpp#L451
+
+#  - Aborted reionization due to unexpected situation: It means that H wouldn't move when ppos < ipos and poccur[-1] == ioccur[-1]
+# https://github.com/mcs07/MolVS/blob/d815fe52d160abcecbcbf117e6437bf727dbd8ad/molvs/charge.py#L206
 
 #  - () is present: The error message is not about a salt, not about a fragment, 
 #  It is showing there is a molecule () (ex) Benzene is present 
-# 
 
 #5. Select columns and rename the dataset