The molecule is a phosphatidylglycerol 12:0 in which the acyl groups at C-1 and C-2 are both hexanoyl. It is a phosphatidylglycerol 12:0 and a hexanoate ester.
[(2R)-3-[[(2S)-2,3-dihydroxypropoxy]-hydroxyphosphoryl]oxy-2-hexanoyloxypropyl] hexanoate