NC83126
Card-20(22)-enolide, 3-[1,4-dioxo-4-[[4-oxo-4-[[6-oxo-6-[[3-[1,2,3,4-tetrahydro-1-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-2,4-dioxo-5-pyrimidinyl]-2-propenyl]amino]hexyl]amino]butyl]amino]butoxy]-12,14-dihydroxy-, (3β,5β,12β)-