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 [1-carboxy-3-[2-[(13E,16E,19E)-docosa-13,16,19-trienoyl]oxy-3-[(9E,12E,15E,18E)-tetracosa-9,12,15,18-tetraenoyl]oxypropoxy]propyl]-trimethylazanium .
user
C56H96NO7+
assistant