COc1ccc(COC(=O)N/N=C2/C[C@@H](O)[C@@H](O)[C@@H]3[C@@H]4C(=O)N(C[C@@H]5CCCO5)C(=O)[C@H]4CC[C@@H]23)cc1
All atoms other than hydrogen are referred to be heavy atoms. How many heavy atoms are there in the molecule?