Sitstart with the big jug, follow the line up to the tree and exit on the right of the tree. The pocket helps you get into position to go for the finish hold, which you can go for with either hand.
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.