Chemistry toilet paper [closed]








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This is a stupid question, but I can’t find one of the compounds on this toilet paper:
[![Nice toilet paper](https://i.stack.imgur.com/JMYRq.jpg)](https://i.stack.imgur.com/JMYRq.jpg)


I have in order:


* Salicylic acid
* Aceton
* Caffeine
* ?
* Urea




The missing compound is 4-[1-hydroxy-2-(methylamino)ethyl]benzene-1,2-diol, also known as [adrenaline](https://en.wikipedia.org/wiki/Epinephrine).


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