You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 5,10,15,20-tetraphenyl-7-(10,15,20-tripentyl-21,23-dihydroporphyrin-5-yl)-21,23-dihydroporphyrin .
user
C79H72N8
assistant