https://pubchem.ncbi.nlm.nih.gov/patent/EP-0067915-A1
4-Chloro-1-methyl-2-butynyl carbanilates and method of combating wild oats - Patent EP-0067915-A1 -...
EP-0067915-A1 chemical patent summary.
https://webbook.nist.gov/cgi/cbook.cgi?Str3View=C622764&Type=JSmol
Structure for Benzene, 1-butynyl-
structurebenzene