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 2-[hydroxy-[(2S)-1-hydroxy-3-octadec-9-enoyloxy-4-oxononadecan-2-yl]oxyphosphoryl]oxyethyl-trimethylazanium .
user
C42H83NO8P+
assistant