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(2R,3aR,5aS,6R,9S,9aR)-6,11,11-trimethyl-2-phenyloctahydro-6,9-methanobenzo[b]isoxazolo[2,3-d][1,4]oxazin-4(2H)-one
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(1S,4R,4aS,6aR,6bS,9aS,11aR)-4,12,12-trimethyldodecahydro-6H-1,4-methanobenzo[b]cyclopenta[4,5]isoxazolo[2,3-d][1,4]oxazin-6-one
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(2S,3aR,5aS,6R,9S,9aR)-2-butyl-6,11,11-trimethyloctahydro-6,9-methanobenzo[b]isoxazolo[2,3-d][1,4]oxazin-4(2H)-one
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(1S,4R,4aS,6aR,6bS,10aS,12aR)-4,13,13-trimethyldodecahydro-1,4-methanobenzo[b]benzo[4,5]isoxazolo[2,3-d][1,4]oxazin-6(6aH)-one