You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 6,6-diethyl-8,9,10-trimethyl-7-methylidene-1-propan-2-ylisoquinolino[2,1-a]quinolin-5-ium into its molecular formula.
user
C28H34N+
assistant