IUPAC_SMILES_plus
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Polymers extension unclear
I have filed an issue https://github.com/timvdm/OpenSMILES/issues/8 requesting explanation of the polymers extension. Since OpenSMILES GitHub repository does not attract much attention, I would like to repeat it here too. Moreover, I believe IUPAC's SMILES specification would benefit from unambiguously describing this extension.