NC44209
1H,5H,11H,15H-Xantheno[2,3,4-ij:5,6,7-i‘j′]diquinolizin-18-ium, 9-[5-[[[6-[[[[3-[4-amino-7-[2-deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-3-O-2-propen-1-yl-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-5-yl]-2-propyn-1-yl]amino]carbonyl]oxy]-4-hexen-1-yl]amino]carbon...