(2S,3S,4S,5R,6R)-6-{[(2R,3R,4S,5S,6S)-2-{[(1S,5R,6S,9S,11R,14R,15S,18S,21S)-6,10,10,14,15,18,21-heptamethyl-4,22-dioxo-23-oxahexacyclo[19.2.1.01,18.06,11.02,15.05,14]tetracos-2(3)-en-9-yl]oxy}-6-carboxy-4,5-dihydroxy-3,4,5,6-tetrahydro-2H-pyran-3-yl]oxy}-3,4,5-trihydroxytetrahydropyran-2-carboxylic acid