Draw the structure of a molecule of butanone.

Explanation

`H-underset(H)underset(|)overset(H)overset(|)(C)-underset(H)underset(|)overset(H)overset(|)(C)-overset(O)overset(||)(C)-underset(H)underset(|)overset(H)overset(|)(C)-H" or "CH_(3)-CH_(2)-overset(O)overset(||)(C)-CH_(3)`.