1-Trimethylsilanyl-5-trityloxy-pent-1-yn-3-ol

(3R)-1-(trimethylsilyl)-5-(triphenylmethoxy)pent-1-yn-3-ol

(R)-tert-butyldimethyl((1-(trimethylsilyl)-5-(trityloxy)pent-1-yn-3-yl)oxy)silane