[(E,2R,3S,6R)-1-[(1S,3R,4R)-4-(2-hydroxyethoxy)-3-methoxycyclohexyl]-2,6,8-trimethyl-5,9-dioxonon-7-en-3-yl] (2S)-1-[2-[(2R,3R,6S)-6-[(2S,3E,5E,7E,9S,11R)-2,13-dimethoxy-3,9,11-trimethyl-12-oxotrideca-3,5,7-trienyl]-2-hydroxy-3-methyloxan-2-yl]-2-oxoacetyl]piperidine-2-carboxylate