O=C(N[C@@H]1C/C=C\C[C@H](CC(=O)N(CCO)Cc2ccccc2)C(=O)N[C@@H](Cc2c[nH]c3ccccc23)COC1=O)OCC1c2ccccc2-c2ccccc21
All atoms other than hydrogen are referred to be heavy atoms. How many heavy atoms are there in the molecule?