23-((3-Amino-3,6-dideoxyhexopyranosyl)oxy)-1,3,5,6,27-pentahydroxy-11-isopropyl-9-oxo-10,29-dioxabicyclo[23.3.1]nonacosa-15,17,19,21-tetraene-26-carboxylic acid AIDS-138628 AIDS138628 NSC645797 YS-822A