You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[1-[4-(3-phenylimidazo[1,2-a]pyridin-2-yl)phenyl]cyclobutyl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H29N3O2
assistant