It doesn't surprise me it's taking so long really. It's not often that you have a molecule with so many different potential uses - ranging from pulmonary hypertension, CVD, CHF, and CKD to covid and HIV.  In fact, I'm sure it's unique. Plus this is an entirely new field. Putting a value on it all is a huge job, and no boubt Don is aiming high. What I find is frustrating is the lack of information about what's going on.