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system
Name the molecular formula for the molecule established as 2-amino-9-[(1S,6S,7R,9R,14S,15R,19R,20S)-19-(6-aminopurin-9-yl)-20-fluoro-4,12-dihydroxy-4,12-bis(sulfanylidene)-3,5,8,11,13,16,18-heptaoxa-4lambda5,12lambda5-diphosphatetracyclo[13.2.2.16,9.01,14]icosan-7-yl]-1H-purin-6-one using the IUPAC nomenclature.
user
C21H23FN10O10P2S2
assistant