CC(=O)OCC(OC(C)=O)C(OC(C)=O)C(OC(C)=O)C(/C=N\Nc1nc2ccccc2c(=O)[nH]1)=N/Nc1nc2ccccc2c(=O)[nH]1
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?