COC1/C=C\C=C(/C)C(=O)NC2=CC(=O)C(NCCCl)=C(CC(C)CC(OC)C(O)C(C)/C=C(/C)C1OC(N)=O)C2=O
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?