sample
  Mrv0540 04111114342D

  2  1  0  0  0  0            999 V2000
   -0.8436    0.7808    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.9021    0.2265    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
M  ALS   1  0 F
M  END

$$$$