{(1R,2S,6R)-2-(tert-butyldimethylsilyloxy)-6-[(S)-5-(tetrahydro-2H-pyran-2-yloxy)hexyl]-5-oxocyclohex-3-en-1-yl}acetic acid

(4S,5R,6R)-4-(tert-butyldimethylsilyloxy)-6-[(S)-5-(tetrahydro-2H-pyran-2-yloxy)hexyl]-5-(2-triethylsilyloxyethyl)cyclohex-2-en-1-one