You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-methyl-4-(5-methyl-5-phenylcyclohepta-1,3,6-trien-1-yl)-6-phenyl-1,3,5-triazine by IUPAC nomenclature, provide its molecular formula.
user
C24H21N3
assistant