CCC[C@@H]1CC2=CC(=O)CC[C@]2(C)[C@@H]2CC[C@@]3(C)[C@H](CC[C@]3(O)CCC(=O)[O-])[C@H]12.[K+]
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?