(4R,5R,9S,10R,11S)-Morel-2-en-7-one (9R)-4,4,8,9-tetramethyl-1,4,4a,5,6,8a-hexahydro-1,5-methanonaphthalen-3(2H)-one 1,5-methanonaphthalen-3(2H)-one, 1,4,4a,5,6,8a-hexahydro-4,4,8,9-tetramethyl-, (9R)- 4,4,8,9-Tetramethyl-1,4,4a,5,6,8a-hexahydro-2H-1,5-methano-naphthalen-3-one InChI=1/C15H22O/c1-8-5-6-10-9(2)11-7-12(16)15(3,4)14(10)13(8)11/h5,9-11,13-14H,6-7H2,1-4H3/t9-,10?,11?,13?,14?/m1/s