11-Deoxojervine-4-en-3-one 14410-98-1 Spiro(9H-benzo(a)fluorene-9,2'(3'H)-furo(3,2-b)pyridin)-3(1H)-one, 2,3'a,4',5,5',6,6',6a,6b,7,7',7'a,8,11,11a,11b-hexadecahydro-3',6',10,11b-tetramethyl-