C#CCOCCOCCOCCNc1nc(N2CCN(C(=O)[C@H](C)n3cc(CCCN=C(N)N)nn3)CC2)nc(N2CCN(C(=O)[C@H](C)n3cc(CCCN=C(N)N)nn3)CC2)n1.Cl
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?