C/C=C\C=C/C(=O)Nc1cccc(C2=NOC3(C2)C[C@H](C(N)=O)N(C(=O)Cc2ccc([N+](=O)[O-])cc2)C3)c1
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?