Transformations of Triangle in the Coordinate Plane

In the coordinate plane, triangle DEF has vertices at D(1, 2), E(3, 4), and F(5, 2). This triangle undergoes a series of transformations: first, it is rotated 90 degrees counterclockwise about the origin, and then translated 2 units to the right and 1 unit up. What are the coordinates of the vertex E after these transformations?