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 4-[2-[(E)-heptadec-7-enoyl]oxy-3-[(17E,20E,23E)-hexacosa-17,20,23-trienoyl]oxypropoxy]-2-(trimethylazaniumyl)butanoate ?
user
C53H95NO7
assistant