You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 10-(2-propan-2-yl-1H-imidazol-5-yl)-5-(2-propan-2-yl-3H-pyrrol-4-yl)-1H-phenanthro[9,10-c]pyrazole into its molecular formula.
user
C28H27N5
assistant