You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3,4-dihydroxy-5-[(9Z,12Z)-octadeca-9,12-dienoyl]oxy-6-[3-[(3Z,6Z,9Z,12Z,15Z)-octadeca-3,6,9,12,15-pentaenoyl]oxy-2-[(Z)-tetradec-9-enoyl]oxypropoxy]oxane-2-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C59H94O12
assistant