quadricyclane
... that quadricyclane was proposed as a substance to store solar energy?
... that <b id="mwAfk"><a href="./Quadricyclane" id="mwAfo" rel="mw:WikiLink" title="Quadricyclane">quadricyclane</a></b> was proposed as a substance to store <a href="./Solar_energy" id="mwAfs" rel="mw:WikiLink" title="Solar energy">solar energy</a>?