This level is currently nearly impossible to beat without boosters (or even with boosters). This is likely caused by a level buff, lack of moves, an objective which requires insane luck to fulfill, a level glitch, or a design error. This level is currently, or likely one of the hardest levels of the game.
Level 340 is the fifth level in Pearly White Plains and the 122nd jelly level. To pass this level, you must clear 77 double jelly squares in 17 moves or fewer.
When you complete the level, Sugar Crush is activated and will score you additional points.