bohemic acid
... that antitumor agents isolated from bohemic acid are named after the characters of the opera La bohème?
... that antitumor agents isolated from <b id="mwCdA"><a href="./Bohemic_acid" id="mwCdE" rel="mw:WikiLink" title="Bohemic acid">bohemic acid</a></b> are named after the characters of the opera <i id="mwCdI"><a href="./La_bohème" id="mwCdM" rel="mw:WikiLink" title="La bohème">La bohème</a></i>?