"My guess is that this molecule is Melatonin"
you're right.

congrats!
https://en.wikipedia.org/wiki/Melatonin

just sent you 100 STEM and 5 Hive

and if you want to get 200 TMN (TranslateMe Network token) (NEO-based)

https://coinmarketcap.com/currencies/translateme-network-token/

you need to provide me here in the comments section your
NEO-address (it's not recommended to give the one from exchanges).
It's highly recommended to get it with the help of O3-wallet.
if you don't have it, you can follow my little guide on how to create the one (it should take just a couple of minutes).

@alexbiojs/o3-your-gateway-to-the-smart-economy-of-neo-and-ontology-introduction-part-1-o3-wallet-a-creating-a-new-wallet
(O3 (Your gateway to the Smart Economy of NEO and Ontology). Introduction. Part 1. O3 wallet. A. Creating a new wallet)

thanks for your interest for this contest/league.