This is cool. This is for removing nucleotides from the body, rather than repairing damage done by radiation exposure (which probably can’t be done with drugs).
This is factually incorrect. This HOPO 14-1 chelates f-block elements, many of which are radioactive, without depleting other metal ions from the body which are essential for metabolism and other functions. Also, there are a large number of agents which can mitigate the damage done by radiation exposure when administered prophylactically