4-[6-[[(2R,3R,4R,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[(2R,3R,4R,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[(2R,3R,4R,5R)-3-[[(2R,3R,4R,5R)-3-[[(2R,3R,4R,5R)-3-[[(2R,3R,4R,5R)-3-[[(2R,3R,4R,5R)-3-[[(2R,3R,4R,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[(2R,3R,4R,5R)-3-[[(2R,3R,4R,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[(2R,3R,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3-[hydroxy-[2-hydroxy-3-[3-[[(Z)-octadec-9-enoyl]amino]propoxy]propoxy]phosphinothioyl]oxy-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-5-(2,4-dioxopyrimidin-1-yl)-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-5-(2,4-dioxopyrimidin-1-yl)-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-5-(2,4-dioxopyrimidin-1-yl)-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-5-(2,4-dioxopyrimidin-1-yl)-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-5-(2,4-dioxopyrimidin-1-yl)-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-5-(2,4-dioxopyrimidin-1-yl)-4-methoxyoxolan-2-yl]methoxy-sulfanylphosphoryl]oxy-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-4-methoxyoxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxyhexylcarbamoyl]-3,6-dichloro-2-(2,4,5,7-tetrachloro-3-hydroxy-6-oxoxanthen-9-yl)benzoic acid