(4aa,7a,8aβ)-3,4,4a,7,8,8a-Hexahydro-3,3,6,7-tetramethyl-1H-2-benzopyran;(4aR,8aR)-3,3,6,7-Tetramethyl-1,4,4a,7,8,8a-hexahydroisochromene;
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