494844-37-0 2H-Pyran-2-one,6-[(1E,3Z,5R,7E,9E,11R,13S,14R,15R)-3-ethyl-14-hydroxy-5,9,11,13,15-pentamethyl-12-oxo-1,3,7,9-heptadecatetraenyl]-5,6-dihydro-, (6R)- 873924-76-6 2H-Pyran-2-one,6-[(1E,3Z,5R,7E,9E,11R,13S,14R,15S)-3-ethyl-14-hydroxy-5,9,11,13,15-pentamethyl-12-oxo-1,3,7,9-heptadecatetraenyl]-5,6-dihydro-5-methyl-, (5R,6S)-