Now, this entire long unsaturated hydrocarbon chain is that non polar region of that fingersene molecule. And notice we also have a double bond that means it is unsaturated. And this nitrogen here is basically attached onto the carbon of the carboxylic acid that is part of that fatty acid. And so these two chains basically extend along this direction, as shown in this pictorial representation. And this is a region that will be found deep inside that cell membrane interacting with the non polar regions of those nearby phospholipid molecules. And this is a section that will basically interact with the aqueous environment and with the heads, the hydrophilic heads of those nearby phospholipid molecules.