1H,6H-5,11b-ethano[1,3]dioxolo[4,5-j]phenanthridin-1-ol, 4,4a-dihydro-7-methoxy- 7-methoxy-2,3-didehydrocrinan-1-ol InChI=1/C17H19NO4/c1-20-15-10-8-18-6-5-17(13(18)3-2-4-14(17)19)11(10)7-12-16(15)22-9-21-12/h2,4,7,13-14,19H,3,5-6,8-9H2,1H