You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2S)-1-[4-(2,5-dibromophenyl)sulfonylpiperazin-1-ium-1-yl]-3-[[(2R)-oxolan-2-yl]methoxy]propan-2-ol ?
user
C18H27Br2N2O5S+
assistant