You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by (3-bromophenyl)-[5-(5-tert-butyl-1,3,4-oxadiazolidin-2-yl)-2,4-dimethyl-1H-pyrrol-3-yl]methanone ?
user
C19H24BrN3O2
assistant