What's your subject? I'm guessing some interesting root patterns in the shaded area (center) of your image. It seems you have exposed well enough for the bright parts of the image, but the shadows are not your friend here. The only workable solution that I can see is exposure bracketing. You will need to work out what the correct exposure is for the shadows (subject) and then the difference for the highlights. This could be 3 shots, 5 shots or 9 shots (IDK) and then merge them together in your editing software. Your camera probably can't take on board that significant difference of dynamic range in one shot. Of course, you could light it up with multiple strobes........