Cc1ccccc1Oc1nc2c(C)cccn2c(=O)c1/C=C(\C#N)C(=O)Nc1c(C)n(C)n(-c2ccccc2)c1=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?