ATOM   CHEMICAL  BOND LENGTH    BOND ANGLE     TWIST ANGLE
NUMBER  SYMBOL    (ANGSTROMS)     (DEGREES)      (DEGREES)
 (I)                  NA:I          NB:NA:I      NC:NB:NA:I     NA   NB   NC

   1      C       
   2      H         1.09240  *                                  1
   3      H         1.09240  *     103.66434  *                 1    2