Ja     R' U L' U2 R U' R' U2 R L U'

Ja
Adjacent corner swaps

Alternate Algorithms

Setup

R' U L' U2 R U' R' U2 R L U'

Recognition

Four adjacent pieces are solved in the front, so half of the top layer is solved. Two adjacent corners and edges need to be swapped, forming a mirrored J shape in the back.