You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 2-(bromomethyl)-3-piperidin-1-ium-1-yl-2-(piperidin-1-ium-1-ylmethyl)propan-1-ol;dibromide ?
user
C15H31Br3N2O
assistant