Anyone looked up those molecular diagrams? In guessing they're basic hormones like oxytocin
edit: I'm an idiot, oxytocin is a quite a larger molecule.
Now that I'm at my computer I can zoom in better but its still difficult to read. They definitely seem like real molecules and not something the author just made up on the spot.
@Lanfear Are you fucking kidding? He's fucked those girls senseless since the beginning of the series. The manga is allowed to have a Lesbian Death Battle without you whining about it.