二螺[呋喃-3(2H),2'(5'H)-呋喃-5',1''(2''H)-萘]-3''(4''H)-酮,6''-(乙酰氧基)-5''-[(乙酰氧基)甲基]-3',4',4''a,5'',6'',7'',8'',8''a-八氢-4''-羟基-2'',5'',8''a-三甲基-,(1''R,2'R,2''S,4''S,4''aS,5''S,6''S,8''aS)- (9CI)
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