COC(=O)[C@H]1[C@H](OC)[C@@H](OC(=O)c2cc(OC)c(OC)c(OC)c2)C[C@H]2CN3CCc4c([nH]c5cc(OC)ccc45)[C@@H]3C[C@H]21
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?