NCC[C@H](O)C(=O)N[C@H]1C[C@@H](N)[C@@H](O[C@H]2O[C@@H](CN)[C@@H](O)[C@@H](O)[C@@H]2N)[C@@H](O[C@H]2O[C@@H](CO)[C@@H](O)[C@@H]2O)[C@@H]1O
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?