Melatonin
Melatonin
(ROOT (NP (NNP Melatonin)))
It has ten grams of melatonin.
( It ( ( has ( ( ten grams ) ( of melatonin ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ has) (NP (NP (CD ten) (NNS grams)) (PP (IN of) (NP (NN melatonin))))) (. .)))