Those are a lot of fancy words you have there, but it's definitely a hormone. https://pubchem.ncbi.nlm.nih.gov/compound/Melatonin https://pubchem.ncbi.nlm.nih.

Those are a lot of fancy words you have there, but it's definitely a hormone. https://pubchem.ncbi.nlm.nih.gov/compound/Melatonin https://pubchem.ncbi.nlm.nih.gov/compound/Melatonin