Showing structure for (1r,2r)-2-[(2s,8r,9s,11r,13s,14s,15r,16s)-7-cyano-8,14,16-trihydroxy-9,11,13,15-tetramethyl-18-oxo-1-oxacyclooctadeca-4,6-dien-2-yl]cyclopentane-1-carboxylic acid