You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3R,4R,5R)-5-(6-benzamidopurin-9-yl)-2-[[[(2R,3R,4R,5R)-5-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-4-[tert-butyl(dimethyl)silyl]oxy-2-(6-methylpurin-9-yl)oxolan-3-yl]oxy-(2-isocyanoethoxy)phosphinothioyl]oxymethyl]-4-fluorooxolan-3-yl]oxy-hydroxy-oxophosphanium;[(2R,3R,4R,5R)-5-(6-benzamidopurin-9-yl)-2-[[[(2R,3R,4R,5R)-4-[tert-butyl(dimethyl)silyl]oxy-5-(hydroxymethyl)-2-(6-methylpurin-9-yl)oxolan-3-yl]oxy-(2-isocyanoethoxy)phosphinothioyl]oxymethyl]-4-fluorooxolan-3-yl]oxy-hydroxy-oxophosphanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C95H110F2N20O24P4S2Si2+2
assistant