You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by [1-carboxy-3-[3-[(17E,20E,23E)-hexacosa-17,20,23-trienoyl]oxy-2-[(7E,10E,13E,16E)-nonadeca-7,10,13,16-tetraenoyl]oxypropoxy]propyl]-trimethylazanium ?
user
C55H94NO7+
assistant