2-Benzoylamino-thiazole-5-carboxylic acid ethyl ester

(1R,2R,3R,4R)-1-tert-butoxycarbonylamino-2-hydroxy-3,6-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-4-hydroxymethylcyclopentane

((2R,3S,3aR,9aR)-5,5,7,7-Tetraisopropyl-3-methoxy-hexahydro-4,6,8-trioxa-5,7-disila-cyclopentacycloocten-2-yl)-carbamic acid tert-butyl ester