shell, draft, extrude, surface?!

One more question. I thought this would be easy but I guess not. I mean, it probably is but I am probably making it way more complicated than it really is. Any suggestions on how to go about recreating this? I tried to do a draft but can get the angle. Same with a shell. Tried to take a solid rectangle and extrude-cut the corners away and then add fillet but it doesn't let me. Haven't even got far enough to add the flange. Or is that my problem? Please help!

SolidworksParts And Features