Level 3742 is the second level in Candy Circus and the 398th mixed mode level (389th jelly-ingredients). To pass this level, you must clear 63 double jelly squares and collect 1 cherry in 34 moves or fewer.
When you complete the level, Sugar Crush is activated and will score you additional points.
This is a redundant mixed level. The ingredient will be auto-collected once the keys are collected, and the keys have jelly under them, so the ingredient will always be collected before the jelly is destroyed.