You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
trizinc;5,10,15-trimethyl-20-[4-[(Z)-pyrrol-1-id-2-yl(pyrrol-2-ylidene)methyl]phenyl]porphyrin-22,24-diide is the IUPAC name of a molecule. Please give its molecular formula.
user
C76H54N12Zn3
assistant