You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 9-[11-[4-(1-butylpyridin-1-ium-4-yl)pyridin-1-ium-1-yl]undecyl]acridine by IUPAC nomenclature, provide its molecular formula.
user
C38H47N3+2
assistant