COC(=O)C1=C(C(=O)OC)C2N(Cc3ccccc3)c3ccccc3C23CC(C(=O)OC)N(C(=O)Nc2ccc(C(F)(F)F)cc2)C3=N1
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?