COc1ccc(C(=O)/C=C/c2ccc(OCCCCCCCCCCOc3ccc(/C=C/C(=O)c4ccc(OC)c(OC)c4)cc3)cc2)c(OC)c1
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?