You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
12-butan-2-yl-7-(2,6-dimethylphenyl)-10-methyl-9-pyridin-2-ylimidazo[1,2-f]phenanthridine;ethane The above is the IUPAC name of a molecule. Write its molecular formula.
user
C35H37N3
assistant