1H-NAPHTHO[2,1-B]PYRAN,4A,5,6;(4aR,6aα,10bα)-4a,5,6,6a,7,8,9,10,10a,10b-Decahydro-3,4aβ,7,7,10aα-pentamethyl-1H-naphtho[2,1-b]pyran
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