@<TRIPOS>MOLECULE
UNK
6 4 0 0 0
SMALL
GASTEIGER

@<TRIPOS>ATOM
   1   Ca        0.0000    0.0000    0.0000 Ca    1 UNL  1.0000
   2    C        0.0000    0.0000    0.0000 C.3   1 UNL -0.0305
   3    H        0.0000    0.0000    0.0000 H     1 UNL  0.0265
   4    H        0.0000    0.0000    0.0000 H     1 UNL  0.0265
   5    H        0.0000    0.0000    0.0000 H     1 UNL  0.0265
   6    H        0.0000    0.0000    0.0000 H     1 UNL  0.0265
@<TRIPOS>BOND
    1     2     3  1
    2     2     4  1
    3     2     5  1
    4     2     6  1