I looked all over but I was unable to find what that specific chemical structure actually was, so instead of admitting ignorance I'm gonna go with it's fake and made up and the we're definitely not supposed to look into it at all. Beyond seemingly everyone in this comic been in some way or another post relationship, just surface level stuff. The opening was nice, as this is essentially the start of a true arc. The use of color is almost always the most striking part of the art, each panel keeping to the pallet yet staying interesting despite it.