Clip bolts angling left. Then straight up to gain the large overlap. Use gear in the overlap and finish with 2 bolts to a bolt anchor.
This route is on the small buttress above and behind Mary's Bust. The route starts approximately in the center and low point of the face.
Hike up to Moon Light Rock and traverse north on the ledge at the top of Mary's Bust Left (see BG's bata photo: current routes on Mary's Bust, Left Buttress. He has routes 10 and 11 marked on the face).
8 bolts; small gear, you may find it nice to place about 3 small nuts in the overlap.