Choose the desired coordinate under the know conditions

Hello everybody! Wish you have a good day!

I want to select the center masspoint in this image

And I use these code:

closeMRIim = imcomplement(closeMRI1);
[Lim, numim] = bwlabel(closeMRIim);
stats = regionprops(Lim, 'Centroid');
figure, imshow(closeMRI1); hold on;
for i = 1 : length(stats)
  temp = stats(i).Centroid;
  plot(temp(1), temp(2), 'r.');
end
plot(temp(1), temp(2), 'r.');
centroids = cat(1, stats.Centroid)
for i = 1 : length(stats)
  if(centroids < 900 && centroids > 700 && centroids > 300 && centroids < 700)
      centerx1 = centroids;
      centery1 = centroids;
      break
  else
      continue
  end
end

I have got the masspoint of all the objects, and now I want to choose the center one:

But my code didn't find the center masspoint and its coordinate(I have put a data cursor on it). Could you please tell me how to change the code?

Best regards Neil