Wide sit start with the lowest part of the arete and a right sidepull. Pull off the ground with some tenuous moves through the arete and crimps/rails on the face before topping out to the right.
I don’t know if this start has been done before (matched on right crimp) but it felt a lot harder than the normal sit start just getting off the ground so I’m going with V7 since the sit is V6/7.