给出化合物A、B、C的结构和反应过程并对各个谱学数据的归属给以说明
A的分子式C10H16,经酸性KMnO4加热氧化后所得产物B再与重氮甲烷反应得C。C的光谱数据为1HNMRδ(1H)3.68(6H,s),1.90(4H,q,J=7Hz),0.77(6H,t,J=7Hz);δ13C NMR(13c):8.1(q),24.8(t),51.7(q),58.3(s),171.7(s);IR:1730cm-1
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