You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-[(1R,6R,8R,9R,10R,15S,17R,18R)-8-(6-aminopurin-9-yl)-9-fluoro-3,12-dihydroxy-18-methyl-3,12-dioxo-2,4,7,11,13,16-hexaoxa-3lambda5,12lambda5-diphosphatricyclo[13.2.1.06,10]octadecan-17-yl]-5-fluoro-3H-pyrrolo[2,3-d]pyrimidin-4-one;7-[(1R,6R,8R,9R,10R,15R,17R,18R)-8-(6-aminopurin-9-yl)-9-fluoro-3,12,18-trihydroxy-3,12-dioxo-2,4,7,11,13,16-hexaoxa-3lambda5,12lambda5-diphosphatricyclo[13.2.1.06,10]octadecan-17-yl]-5-fluoro-3H-pyrrolo[2,3-d]pyrimidin-4-one;N,N-diethylethanamine;ethoxy(trimethyl)silane;methane The above is the IUPAC name of a molecule. Write its molecular formula.
user
C61H94F4N18O24P4Si
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