Where does “molecular” come from?

I appreciate the careful constraints, but I need to flag an issue: the etymological chain provided appears malformed or circular. It shows "Latin -arius" appearing twice with "Latin -alis" and "Latin -lus" interspersed, which doesn't constitute a coherent derivational path from English back through Latin. For "molecular," the actual chain would be: English *molecular* < French *moléculaire* < Latin *molēcula* (small mass) + *-āris* (adjective suffix). I cannot write an accurate one-sentence origin summary from the chain as given, since it doesn't show how these Latin elements combine to form a coherent etymology. Could you provide the correct chain, or clarify the intended structure?

molecular (English): Relating to, or consisting of, or produced by...