4-[4-二甲基氨基-6-甲基-5-[6-甲基-5-[(6-甲基-5-氧代-2H-吡喃-2-基)氧基]四氢吡喃-2-基]氧基四氢吡喃-2-基]氧基-2-乙基-2,5,7,10-四羟基-6,11-二氧代-3,4-二氢-1H-并四苯-1-羧酸甲酯
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