4-5 weeks tops. Especially, if you are lean.
I think the 4-5 months came from the same people who reported fina to be 5 months.
I would speculate if you are a sprinter who is very active, lean, with plenty of food and fluid intake, you might even get away with 2-3 weeks.
Of course a bodybuilder who is cutting could clear the drug relatively quickly also.
But it is better to be safe than sorry.
Nautica