You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl 2-[(1S,4R,6S,7Z,14R,18R)-4-(cyclopropylsulfonylcarbamoyl)-18-[4-(1,3-oxazol-2-yl)-1-propan-2-ylbenzimidazol-2-yl]oxy-2,15-dioxo-16-azatricyclo[14.3.0.04,6]nonadec-7-en-14-yl]acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C41H53N5O9S
assistant