You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(2S)-1-[(4Z,7Z,10Z,13Z,16Z)-docosa-4,7,10,13,16-pentaenoyl]oxy-3-octadecanoyloxypropan-2-yl] tetracosanoate into molecular formula.
user
C67H120O6
assistant