Deserialize text in Java data structure

I would like to eval() the following text:

(2, [(3, 4), (5, 6)])

in Java, into some objects I defined, so let's assume:

new Pair(1, new ArrayList<Pair>({new Pair(3,4), new Pair(5,6)}))

What is the strategy to achieve so? The idea is that I could get any of the following:

(2, [(3, 4), (5, 6), (5, 6)])
(2, [(3, 4), (5, 6)])
(2, [(3, 4)])

Should I match it with regular expressions?

This is my attempt:

/\(([0-9]+), \[(?:\(([0-9]+), ([0-9]+)\)(?:, )?)+\]\)/