to make the formula feel fresh 
(ROOT (S (VP (TO to) (VP (VB make) (S (NP (DT the) (NN formula)) (VP (VB feel) (ADJP (JJ fresh))))))))
(ROOT (S (VP (TO ) (VP (VB ) (S (NP (DT ) (NN )) (VP (VB ) (ADJP (JJ ))))))))