methyl (4S,5E,6S)-5-ethylidene-4-[2-[[(2R,3S,4S,5R,6R)-6-[2-[4-[2-[(2S,3E,4S)-3-ethylidene-5-methoxycarbonyl-2-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-4-yl]acetyl]oxyphenyl]ethoxy]-3,4,5-trihydroxyoxan-2-yl]methoxy]-2-oxoethyl]-6-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-3-carboxylate