RDKit          

  5  3  0  0  0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.0000 Ca  0  0  0  0  0 15  0  0  0  0  0  0
  1  2  2  0
  1  3  1  0
  1  4  1  0
M  CHG  3   3  -1   4  -1   5   2
M  END
> <PUBCHEM_COMPOUND_CID>
10112

> <NAME>
CALCIUM CARBONATE


$$$$