how to convert a string to json structure

how to convert a string to json structure


I have a string that is like [{"carePacks":
[{"businessCode":"J1PS","description":"HP 1"}],"coveragePeriod":12},
{"carePacks":[{"businessCode":"J1PS","description":"HP
s"}],"coveragePeriod":13}].
can you give me some advice on how to convert it to a json structure,
and how to get data from the data structure, like get "HP 1".