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 (1R,2S)-1-[2-[(1R,18R,20R,24S,27S)-24-tert-butyl-11-[(1-methylpyrrolidin-3-yl)methoxy]-22,25-dioxo-2,21-dioxa-4,26-diazapentacyclo[24.2.1.03,12.05,10.018,20]nonacosa-3,5,7,9,11-pentaen-27-yl]-2-oxoethyl]-2-ethenyl-N-(1-methylcyclopropyl)sulfonylcyclopropane-1-carboxamide .
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C47H64N4O9S
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