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Hi,
This could be the right answer :-)

"This could be the right answer :-)"
hi
This ("Protein") was the right answer to some extent/in some sense,
(The majority (or all, I don't know yet) of molecules in this league are gonna be proteins.)
but this contest requires more specificity

ATP synthase is the right answer.
https://en.wikipedia.org/wiki/ATP_synthase
This time we have a winner (see comments section).

thanks for your interest/participation for/in the "Identify the molecule" league )

"...quite obvious answer: Protein."
hi
yes, you're right to some extent/in some sense), it is a protein )
but this contest requires more specificity
The majority (or all, I don't know yet) of molecules in this league are gonna be proteins.

I understand that that was a joke )

This time we have a winner (see comments section).
ATP synthase is the right answer.
https://en.wikipedia.org/wiki/ATP_synthase

thanks for your interest/participation for/in the "Identify the molecule" league )

Owwww, yeah, understand you want the answer to be more specific! Great someone else found the answer! Njoy the day! :)

ATP synthase
ATP synthase is an enzyme that creates the energy storage molecule adenosine triphosphate (ATP). ATP is the most commonly used "energy currency" of cells for all organisms. It is formed from adenosine diphosphate (ADP) and inorganic phosphate (Pi). The overall reaction catalyzed by ATP synthase is:

ADP + Pi + 3H+out ⇌ ATP + H2O + 3H+inThe formation of ATP from ADP and Pi is energetically unfavorable and would normally proceed in the reverse direction.