Write a structure for each of the following compounds:
a. Isobutyl acetate
b. Isopropyl formate
c. Sodium 2-chlorobutanoate
d. Calcium acetate
e. Phenyl benzoate
f. O-toluamide
g. 2-methoxybutanoyl chloride
h. Benzonitrile
i. Propanoic anhydride
j. 2-acetylcyclohexanecarboxylic acid
k. a-methyl-γ-butyrolactone