O=S(=O)(c1ccc(/N=C2\NC(c3ccc(O)cc3)(c3ccccc3O)c3ccccc32)cc1)c1ccc(/N=C2/NC(c3ccc(O)cc3)(c3ccccc3O)c3ccccc32)cc1
Heavy atom refers to any atom that is not hydrogen. How many heavy atoms do the molecule have?