You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 4-amino-1-[(1S,3R,4R,7S)-1-(2,2-dimethylpropyl)-7-[hydroxy-[(2-methylpropan-2-yl)oxy]phosphinothioyl]oxy-2,5-dioxabicyclo[2.2.1]heptan-3-yl]-5-methylpyrimidin-2-one .
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C19H32N3O6PS
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