Determining if Molecules are Lipids

Are the following two molecule lipids? Explain your reasoning. If the molecule is a lipid, identify the "head" and "tail" section(s).

Please see the attachment below for the structural formulas.

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...p. Plus somewhere in the middle of the chain there is C=C double bond, hence unsaturated.

Molecule B IS a lipid called "lecithin". Polar "head" ...