C=C1[C@@H](OC(C)=O)/C=C/C2C3C(=O)[C@@](C)(OC(C)=O)[C@H]([C@H](OC(C)=O)[C@]4(O)[C@@H](C)C(=O)O[C@H]4[C@H]1Cl)[C@@]23C
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?