Anyone know why there are parentheses and brackets in this skeletal formula? Also wondering if this representation gives a full chemical formula, or just the structure of a repeating hydrocarbon chain?

  • 4
    $\begingroup$ Ever heard about polymers? $\endgroup$ Sep 18 at 19:26
  • 1
    $\begingroup$ Well, that's pretty elaborate one, with shown frequencies of occurrence of monomers. Only thing outside of chain are hydroxyls - "hydroxyl-terminated". $\endgroup$
    – Mithoron
    Sep 18 at 19:38


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