N-((2S,3R,4S,6R)-2-(((2R,4R,4a'R,5S,6S,7'R,8'S,9'R,10'R,13'R,15'R,16'R,17'S,17a'S)-7'-ethyl-5,8',9',15'-tetrahydroxy-4-methoxy-4,6,8',10',11',13',15',17'-octamethyl-5'-oxooctadecahydro-4'H-spiro[pyran-2,2'-[1,3]dioxino[4,5-m][1]oxa[6]azacyclopentadecin]-16'-yl)oxy)-3-hydroxy-6-methyltetrahydro-2H-pyran-4-yl)-N-methylnitrous amide
