{(1S,2R)-3-[(5-Amino-2,2-dimethyl-pentyl)-(benzo[1,3]dioxole-5-sulfonyl)-amino]-1-benzyl-2-hydroxy-propyl}-carbamic acid (3R,3aS,6aR)-(hexahydro-furo[2,3-b]furan-3-yl) ester

(3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl N-(1S,2R)-3-[(1,3-benzodioxol-5-ylsulfonyl)(5-cyano-2,2-dimethylpentyl)amino]-1-benzyl-2-hydroxypropylcarbamate

(3R,3aS,6aR)-hexahydro[2,3-b]furan-3-yl N-((1S,2R)-1-benzyl-3-[6-amino-2,2-dimethylhexyl][(3,4-methylenedioxyphenyl)sulfonyl]amino-2-hydroxypropyl)carbamate

{(1S,2R)-3-[(Benzo[1,3]dioxole-5-sulfonyl)-(6-cyano-2,2-dimethyl-hexyl)-amino]-1-benzyl-2-hydroxy-propyl}-carbamic acid (3R,3aS,6aR)-(hexahydro-furo[2,3-b]furan-3-yl) ester

{(1S,2R)-3-[(Benzo[1,3]dioxole-5-sulfonyl)-(4-dibenzylamino-2,2-dimethyl-butyl)-amino]-1-benzyl-2-hydroxy-propyl}-carbamic acid (3R,3aS,6aR)-(hexahydro-furo[2,3-b]furan-3-yl) ester