"Sulfur" 
"Carbon, yes wait, no no no" Roban mumbled, catching the flask before it could tip its contents into what he called "The Magic Machine". What he was brewing up smelled of slight musk, and left him slightly drowsy. His workplace was fairly roomy, he could stretch his legs, move around on a chair baring four wheels at the bottom allowing for easy mobility all from the comfort of a seated position. After placing the Carbon flask back in its cabinet with all the other natural ingredients, he took a long slurp from his tea, iced of course. Working day and night has some effects on the human mind, one of them happens to be the urge to bite your hands or inflict self harm. This little experiment he was working on was all for a new brew he was fixing up.

"What if you could create a combination of ingredients from nature, so potent artificially of course, that they could force the mind to relapse then overlap its perception of time, much worse then knockout and much harder to diagnose. The subject would be a gold mine to pick, yes yes that would very very good." Roban went on, rambling on to himself, sniffing the flasks in his cabinet, hoping to find the correct one. "Note to self, write names of ingredients for better sorting." Roban spoke, to himself of course, all while working in an highly fumigated room. Dr. Roban was a man of science, numbers and probability didn't concern him, he was a man who based success off of trial and error, if something failed twice in his experiment, he would put all his effort on the third, if that failed it was scraped and reanalyzed. 

"That wouldn't be potent enough, plus the effects on someone's mind could be completely adverse and leave them.....next" 

"I need tea!" he yelled, kicking his desk before proceeding to bite on his hand. 

"Tea! not coffee!" Roban roared at one of his flasks, which consisted on nothing.