For each of the following problems, draw a formula using the drawing window opened by the Draw Formulas button. When you are finished, Submit your formula and then check it by pressing the Check Molecule button. A help screen is available for the drawing window.

By clicking the Draw Formulas button below a window will open, in which structural formulas for designated names may be drawn.	1.  Draw the Structural Formula for 2-methyl-3-phenylpropanal  ......... 2.  Draw the Structural Formula for 2,2-dimethyl-3-pentanone   .......... 3.  Draw the Structural Formula for 2-benzylcyclobutanone   ............ 4.  Draw the Structural Formula for 2-ethyl-2-phenyl-1,4-cyclohexanedione ... 5.  Draw the Structural Formula for 2,2,4-triethyl-5-oxohexanal ............