You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(2R)-1-[(7Z,10Z,13Z,16Z)-docosa-7,10,13,16-tetraenoyl]oxy-3-[(Z)-icos-11-enoyl]oxypropan-2-yl] (Z)-docos-11-enoate into its molecular formula.
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C67H118O6
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