CS(=O)(=O)O.O=c1c2ccccc2n2nnc3ccc(NCCCNCCNCCCNc4ccc5nnn6c7ccccc7c(=O)c4c56)c1c32
Heavy atom refers to any atom that is not hydrogen. The heavy atoms in molecules are carbon, oxygen, nitrogen, and sulfur. How many heavy atoms are in the molecule?