What is the definition of 1556. 3 ({Hydroxy[(Pyridin 2 Yl)methyl]arsoryl}sulfanyl) L Valine?

Alright, let's break down this culinary conundrum with a splash of humor and a dash of edginess! "1556.3 ({Hydroxy[(pyridin 2 yl)methyl]arsoryl}sulfanyl) L valine" is like saying "a ridiculously fancy, slightly off-the-wall molecule that tastes suspiciously like a cross between a pirate's treasure chest and a malfunctioning lab assistant."

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Now, for an unsettling example sentence using this peculiar compound: "The secret ingredient in the new 'Vampire's Breath' cocktail was 1556.3 L valine, courtesy of the lab assistant who thought he was a molecular alchemist and accidentally created a liquid version of 'I'll be back, I'll be back, I'll be back!'" (Which, let's be real, sounds more like a poorly rehearsed monologue at a horror convention than a sophisticated cocktail recipe.)