Requested WoW macro

I need to know how to make this do an “either or” when it gets to recuperate. Can you Help?
/castsequence reset=2
/target [target=harm, nodead]
/castsequence shuriken toss, shuriken toss, shuriken toss, shuriken toss, shuriken toss, recuperate
Sometimes it gets stuck on Recuperate because I don’t have any combo points. I would like it to be able to select shuriken toss again if it can’t select recuperate.