You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[carboxy-[2-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyl]oxy-3-tetradecanoyloxypropoxy]methoxy]ethyl-trimethylazanium ?
user
C42H76NO8+
assistant