473-98-3 AI3-62999 Betulin Betuline Betulinol Betulol EINECS 207-475-5 Lup-20(29)-ene-3,28-diol, (3beta)- Lup-20(29)-ene-3beta,28-diol Lup-20(30)-ene-3beta,28-diol NSC 4644 Trochol