( Estrogen ( ( causes ( most ( of ( ( the ( reproductive transformation ) ) ( associated ( with puberty ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Estrogen)) (VP (VBZ causes) (NP (NP (JJS most)) (PP (IN of) (NP (NP (DT the) (JJ reproductive) (NN transformation)) (VP (VBN associated) (PP (IN with) (NP (NN puberty)))))))) (. .)))
Estrogen causes most of the reproductive transformation associated with puberty.
(ROOT (S (NP (NNP Estrogen)) (VP (VBZ causes) (NP (NP (DT the) (NNS changes)) (PP (IN of) (NP (NN puberty))))) (. .)))