You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[3-dodecanoyloxy-2-[(13E,16E,19E)-pentacosa-13,16,19-trienoyl]oxypropoxy]-2-(trimethylazaniumyl)butanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C47H85NO7
assistant