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| 13C NMR (126 MHz, DMSO) δ16.76,25.07,25.95, 25.97, 29.88, 38.50,39.50,40.58, 44.27, 56.35, 57.48, 64.66, 66.52, 76.36, 80.45,110.27,130.96,148.37, 149.60, 172.00, |
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