Showing structure for {[(1s,4e,6r,8s,9s,10e,12s,13r,14s,16r,20s)-3,6,13,20-tetrahydroxy-8,14,19-trimethoxy-20-(methoxycarbonyl)-4,10,12,16-tetramethyl-21-oxo-2-azabicyclo[16.2.1]henicosa-2,4,10,18-tetraen-9-yl]oxy}methanimidic acid