You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [[4-(6-aminopurin-9-yl)-2-hydroxy-2-oxo-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3,2]dioxaphosphol-6-yl]methoxy-hydroxyphosphoryl] [4-(3-carbamoylpyridin-1-ium-1-yl)-2,3-dihydroxycyclopentyl]methyl hydrogen phosphate into its molecular formula.
user
C22H29N7O15P3+
assistant