CH3 CH H3C-H2C-H2C- CH2 m/z=58 CH3 CH2 CH3 CH2 HC=CH2 m/=86C O CH2 H2C CH2 CH H3C H2C H CH3 C OH CH2 H2C H2C C H2 CH2 CH CH3 H C OH CH2 CH3 H2C CH2 m/z=86 m/z=58