kessane
(1s-(1alpha (1S-(1alpha,4alpha 4alpha, 5abeta 5abeta,6alpha 6alpha,8aalpha))-八氢-1 8aalpha))-octahydro-1,3,3,6-四甲基-1 6-tetramethyl-1,4-乙基-1h-环戊基 4-ethano-1H-cyclopent(c)oxepin

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