CCN(CC)C(=O)c1sc2c(c1C)c(=O)n(-c1ccc(C)c(C)c1)c(=O)n2Cc1cc(=O)n2ccccc2n1
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?