use the provided render strictly as the base image keep the camera angle layout furniture placement lighting materials and architecture exactly the same modify only the shape of the rug under the sofa and coffee tables the rug is currently partially rectangular with a straight edge on the right side change the rug so that it becomes a perfect regular circle the rug should have smooth evenly rounded edges and form a clean circular shape centered under the sofa and coffee tables keep the same rug material color texture and scale as in the original render do not change any furniture objects lighting or other elements in the scene only adjust the rug shape so it becomes a circular rug
