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jinhong162

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[求助] 求微谱数据

分子式C20H16O6  solvent:methanol-D3
1H-NMR:8.28(1H,s)  7.49(1H,s) 7.15(1H,s)  6.99和6.96(2H)6.85和6.84(1H)
5.29和5.28(2H) 4.02(3H,s)  3.86(3H,s)
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感谢参与,应助指数 +1
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