A.1.8-11.8,C4H8O B.4.1-74.1,CH2OH C.2.8-62.8,C4H8O D.4.1-74.1,CH3CH2COCH3
A.148,134 B.148,127 C.134,127 D.148,140
A.60,56 B.56,67 C.67,63.8 D.67,56