4-[4-[[4-[[4-[[4,5-二氢-3-甲基-5-氧代-1-(4-磺基苯基)-1H-吡唑-4-基]偶氮]苯甲酰基]氨基]苯基]偶氮]-4,5-二氢-3-甲基-5-氧代-1H-吡唑-1-基]苯磺酸
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