2.2.4.5.4.1 Triethylene glycol dinitrate ( TEGDN ) ; 2.2.4.5.4.2 Trimethylolethane trinitrate ( TMETN ) ; 2.2.4.5.4.3 1 , 2 , 4-butanetriol trinitrate ( BTTN ) ; 2.2.4.5.4.4 Diethylene glycol dinitrate ( DEGDN ) .