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