[R] regular expression question

[markleeds at verizon.net]

can someone show me how to use a regular expression to break the string 
at the bottom up into its three components :

(-0.791,-0.263]
(-38,-1.24]
(0.96,2.43]

I tried to use strplit because of my regexpitis ( it's not curable. i've 
been to many doctors all over NYC. they tell me there's no cure  )  but 
it doesn't work because there also dots inside  the brackets. Thanks.

(-0.791,-0.263].(-38,-1.24].(0.96,2.43]