In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Question: Which of the following compounds in a fundamental intermediate of the synthesis of triacylglycerols and phospholipids:
Options: <1> CDP-choline. <2> Phosphatidate <3> Triglyceride <4> Phosphatidylserine <5> CDP-diacylglycerol.
2