C/C1=C/C(C)CC(C)OC(=O)C(C)NC(=O)C(Cc2ccc(O)c(I)c2)N(C)C(=O)CNC(=O)C(C)C1
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?