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 4-[3-(4-bromophenyl)-5-methyl-1,2-oxazole-4-carbonyl]-N-(3-ethoxypropyl)-1H-pyrrole-2-carboxamide .
user
C21H22BrN3O4
assistant