You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [3-[hydroxy-[2-hydroxy-3-[hydroxy-[3-[(6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoyl]oxy-2-[(Z)-tetradec-9-enoyl]oxypropoxy]phosphoryl]oxypropoxy]phosphoryl]oxy-2-octadecanoyloxypropyl] (4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenoate into its molecular formula.
user
C81H136O17P2
assistant