Cardiovascular S1 and S2 without murmur.
 The patient does not have abnormal heart sounds. 
(ROOT (NP (NP (NP (NNP Cardiovascular) (NN S1) (CC and) (NN S2)) (PP (IN without) (NP (NN murmur)))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ does) (RB not) (VP (VB have) (NP (JJ abnormal) (NN heart) (NNS sounds)))) (. .)))
( ( ( Cardiovascular ( ( S1 and ) S2 ) ) ( without murmur ) ) . )
( ( The patient ) ( ( ( does not ) ( have ( abnormal ( heart sounds ) ) ) ) . ) )