Creating an Freesurfer .annot file from an MNI coordinate region of interest

Dear Neurostar community,

My ultimate goal is to do a seed of interest connectivity analysis. Accordingly, I have MNI coordinates for a seed (e.g., left DLPFC). However, for the softwares I am using (CONN toolbox and Brainstorm), I need a .annot file which has the surface region of interest label I want to use as the seed.

My problem is I do not know how to create an .annot file from MNI coordinates of my seed/region of interest.

Any directions as to how I can do this would be greatly appreciated.

Best Wishes,