And in this particular case, the nitrogen is attached onto that carboxylic acid of that particular fatty acid. So this bond is basically this bond here. And notice unlike in this case where we have two of these fatty acids, we only have one fatty acid in this particular case. Now this is the oxygen attached onto this phosphate. And in this particular case, it's the primary oxygen, not the secondary oxygen. Because we have a primary and a secondary, it's the primary attached onto the phosphorus atom of that phosphate group.