(5S,16R)-16-(benzyloxy)-2,2,5,19,19,20,20-heptamethyl-3,3-diphenyl-4,18-dioxa-3,19-disilaheneicosane

(3R,4S,5R,16S)-3,4,5-tris(benzyloxy)-16-(tert-butyldiphenylsilyloxy)-1-(1,3-dioxolan-2-yl)heptadecan-2-ol