O=C(C/C(=N/O)C(=O)NC1=C(Cl)C(=O)c2ccccc2C1=O)CC(c1ccccc1)c1c(O)c2ccccc2oc1=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?