(3aS,6aR,9aR)-Octahydro-1H,3H-2-oxa-3a-aza-9aH-phenalene
(3aS,6aR,9aR)-Octahydro-1H,3H-2-oxa-3a-aza-9aH-phenalene ??
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(3aS,6aR,9aR)-Octahydro-1H,3H-2-oxa-3a-aza-9aH-phenalene ?? ?? ? ???
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(3aS,6aR,9aR)-Octahydro-1H,3H-2-oxa-3a-aza-9aH-phenalene ?? ??
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