CCCC(=O)Nc1nc2c(ncn2[C@@H]2O[C@H]3COP(=O)(O)O[C@@H]3[C@@H]2OC(=O)CCC)c(=O)[nH]1
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?