(1S,3R,7S,8S,8aR)-8-{2-[(2S,4R)-4-hydroxy-1-{[5-(hydroxymethyl)-6-methoxynaphthalen-2-yl]methyl}-6-oxopiperidin-2-yl]ethyl}-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl (2S)-2-methylbutanoate
(1s,3r,7s,8s,8ar)-8-{2-[(2s,4r)-4-hydroxy-1-{[5-(hydroxymethyl)-6-methoxynaphthalen-2-yl]methyl}-6-oxopiperidin-2-yl]ethyl}-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl (2s)-2-methylbutanoate