To determine the number of different stereoisomers for a molecule, use the formula:

$ \text{Number of stereoisomers} = 2^n $

where $ n $ is the number of chiral centers in the molecule.

For the given molecule, there are 2 chiral centers, so:

$ n = 2 $

Therefore, the number of possible stereoisomers is:

$ 2^2 = 4 $

This means there are 4 different stereoisomers possible for the molecule in question.