Cellulose upon acetylation with excess `anhydride//H_(2)SO_(4)` (catalytic) gives cellulose triacetate whose structure is:

Cellulose upon acetylation with excess acetic anhydride/ H_(2)SO_(4) (catalytic) gives cellulose triacetate whose structure is

Cellulose upon acetylation with excess acetic anhydride/ H_(2)SO_(4) (catalytic) gives cellulose triacetate whose structure is

Anhydride of H_2SO_4 is