You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 4-(4-tert-butylphenyl)-8-methyl-6-methylidene-N-phenyl-4,9-dihydropyrimido[1,2-a][1,3,5]triazin-2-amine ?
user
C24H27N5
assistant