O=C(N[C@H]1C/C=C\C(c2ccc(F)cc2)N(Cc2ccccc2)C(=O)C1)OCC1c2ccccc2-c2ccccc21
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?