O=C1[C@H]2C(c3ccccc3)N(c3ccccc3)O[C@H]2C(=O)N1c1ccc(Cc2ccc(N3C(=O)[C@H]4ON(c5ccccc5)C(c5ccccc5)[C@H]4C3=O)cc2)cc1
All atoms other than hydrogen are referred to be heavy atoms. How many heavy atoms are there in the molecule?