[chermi]

Thanks, that's very interesting! Naive question, but why couldn't you force a specific tokenization scheme on SMILES? Specifically, just one token per element? I understand SELFIES does more, but your example of Ba/Br made me wonder.

[dekhn]

I asked the authors of the original SMILES paper and they didn't have a good answer. I wrote a parser for SMILES so I could tokenize that way but never followed up, and eventually SELFIES was announced.

[chermi]

Thanks!