螺[4H-呋喃并[3,2-c]吡喃-2(3H),1'(2'H)-菲]-4,7'(4'bH)-二酮,3',4',4'a,5',6',8',8'a,9',10',10'a-十氢-4'b,6,7,8',8',10'a-六甲基-2'-亚甲基-,(1'S,4'aR,4'bR,8'aR,10'aR)-
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