COc1cc2c(cc1O)CCN[C@@]21CS[C@H]2c3c(OC(C)=O)c(C)c4c(c3C(COC1=O)N1C2C2c3c(cc(C)c(OC)c3O)CC([C@@H]1O)N2C)OCO4
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?