beta-maaliene
1h-环丙烷[a]萘 1H-cyclopropa[a]naphthalene, 1a 1a,2,3,3a 3a,4,5,6,7b-八氢-1 7b-octahydro-1,1,3a 3a,7-四甲基- 7-tetramethyl-, [1a 1ar-( 1a 1aa , 3a 3aa ,7ba)]- 7ba)]-

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