Perbandingan profil fitokimia kulit akar, kulit batang, dan daun Bischofia Javanica Blume sebagai upaya konservasi tumbuhan di Subetnik Batak Karo = Comparison of phytochemical profiling of Bischofia Javanica Blume's root bark, stem bark, and leaves as means for plant conservation in Subethnic Batak Karo