Answer:
wax
Step-by-step explanation:
Wax is also ester of fatty acids but these are differing from fats and oils. These are monoesters of fatty acids while fats and oils are trimesters. The general formula of the wax is following:
CH3 (CH2)nCH2COO(CH2)nCH3
It is an ester which is form from long chain alcohol and long chain acid
CH3 (CH2)nCH2COO(CH2)nCH3(A wax)
= CH3 (CH2)nCH2COOH (acid) + CH3 (CH2)nOH (alcohol)