COc1ccc([C@@H]2CC(=O)c3c(O)cc(O[C@H]4O[C@@H](CO[C@H]5O[C@@H](C)[C@@H](O)[C@@H](O)[C@@H]5O)[C@@H](O)[C@@H](O)[C@@H]4O)cc3O2)cc1O
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?