You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
18-[3,5-bis(3,5-ditert-butylphenyl)pyridin-4-yl]octadeca-1,3,5,7,9,11,13,15,17-nonaynyl-tri(propan-2-yl)silane is the IUPAC name of a molecule. Please give its molecular formula.
user
C60H65NSi
assistant