Chemical structure of <a href="https://en.wikipedia.org/wiki/modafinil" class="extiw" title="w:modafinil">modafinil</a>(<a rel="nofollow" class="external text" href="https://www.medzsafe.com/product/modalert-200-australia/">Modalert 200</a>)(trade name <b>Provigil</b>) — a <a href="https://en.wikipedia.org/wiki/wakefulness-promoting_agent" class="extiw" title="w:wakefulness-promoting agent">wakefulness-promoting agent</a>.
Calvero.
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