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system
Name the molecular formula for the molecule established as (1R,10S)-3,4,5,14-tetramethoxy-18-methylsulfonyl-18-azatetracyclo[8.5.3.01,11.02,7]octadeca-2,4,6,11,14-pentaen-13-one using the IUPAC nomenclature.
user
C22H27NO7S
assistant