You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (4-fluorophenyl)methyl-methyl-[(4-methylphenyl)methyl]-[3-[7-[1-[(4-nitrophenyl)methyl]piperidin-1-ium-1-yl]heptanoyloxy]propyl]azanium .
user
C38H52FN3O4+2
assistant