1,2-bis(2,2-dimethyl-1,3-dioxolan-4-yl)ethane-1,2-diyl dibenzoate

(6R,7S,8S,9R)-7,8-bis(benzyloxy)-2,2,3,3,12,12,13,13-octamethyl-4,11-dioxa-3,12-disilatetradecane-6,9-diyl dimethanesulfonate