14-(Benzyloxy)-13-methyl-5b,12b,13,14-tetrahydro[1,3]benzodioxolo[5,6-c][1,3]dioxolo[4,5-i]phenanthridine AIDS-138468 AIDS138468 Benzyl 13-methyl-5b,12b,13,14-tetrahydro[1,3]benzodioxolo[5,6-c][1,3]dioxolo[4,5-i]phenanthridin-14-yl ether Benzyloxysanguinarine NSC645318