You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2S)-2-hydroxy-3-octadecanoyloxypropyl] (6E,8Z,11Z,14Z,17Z)-5-hydroxyicosa-6,8,11,14,17-pentaenoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C41H70O6
assistant