(1S,3R,4E,6E,8E,10E,12E,14E,16E,18S,19R,20R,21S,25R,27R,30R,31R,33S,35R,37S,38R)-3-{[(2R,3S,4S,5S,6R)-4-amino-3,5-dihydroxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-19,25,27,30,31,33,37-heptahydroxy-35-[(2-hydroxyethyl)oxy]-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10,12,14,16-heptaene-38-carboxylic acid