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 N-[4-[(9S,15R,20S)-17-benzyl-4-methyl-7,11,22-trioxo-3-thia-8,12,17,23,28-pentazatetracyclo[21.2.2.12,5.015,20]octacosa-2(28),4-dien-9-yl]butyl]-4-fluorobenzamide .
user
C41H53FN6O4S
assistant