( This ( ( is ( analogous ( to ( ( related compounds ) ( such ( as ( ( ( ( ( ( hydrogen peroxide ) , ) ( hydrogen sulfide ) ) , ) and ) ( ( deuterium oxide ) ( -LRB- ( ( heavy water ) -RRB- ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ is) (ADJP (JJ analogous) (PP (TO to) (NP (NP (VBN related) (NNS compounds)) (PP (JJ such) (IN as) (NP (NP (NN hydrogen) (NN peroxide)) (, ,) (NP (NN hydrogen) (NN sulfide)) (, ,) (CC and) (NP (NP (NN deuterium) (NN oxide)) (PRN (-LRB- -LRB-) (NP (JJ heavy) (NN water)) (-RRB- -RRB-))))))))) (. .)))
This is analogous to related compounds such as hydrogen peroxide, hydrogen sulfide, and deuterium oxide (heavy water).
(ROOT (S (NP (NNP Water)) (VP (VBZ is) (NP (NP (DT an) (NN oxide)) (PP (IN of) (NP (NN hydrogen))))) (. .)))