You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl 3-[[(11S,14S,17S)-22-bromo-16,25-dimethyl-14-[4-[(2-methylpropan-2-yl)oxycarbonylamino]butyl]-11-[5-[(2-methylpropan-2-yl)oxy]-5-oxopentyl]-12,15,18-trioxo-2-thia-4,10,13,16,19-pentazatricyclo[19.4.0.03,8]pentacosa-1(25),3(8),4,6,21,23-hexaen-17-yl]methyl]indole-1-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C53H72BrN7O9S
assistant