@<TRIPOS>MOLECULE
SO3_500_2CBD
    4     3     0     0     0
SMALL
NO_CHARGES

@<TRIPOS>ATOM
      1 O1         -7.0980    1.2470   16.5890 O.3       1 SO3500      0.0000
      2 O2         -5.2900   -0.3840   16.2640 O.3       1 SO3500      0.0000
      3 O3         -4.8100    1.6110   17.3490 O.2       1 SO3500      0.0000
      4 S1         -6.0090    0.7850   17.4660 S.o       1 SO3500      0.0000
@<TRIPOS>BOND
     1    1    4 1
     2    2    4 1
     3    3    4 2