You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[3-[(13Z,16Z)-docosa-13,16-dienoyl]oxy-2-[(Z)-icos-11-enoyl]oxypropoxy]-3,4-dihydroxy-5-[(Z)-octadec-9-enoyl]oxyoxane-2-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C69H122O12
assistant