20-(4-amino-3,5-dihydroxy-6-methyl-oxan-2-yl) oxy- 4,22,24,28,29,32,34, 36-octahydroxy-2,3,5-trimethyl-26, 38-dioxo-1- oxacyclooctatriaconta-6,8,12,14,16, 18-hexaene-23-carboxylic acid