COc1ccc2[n-]c([S+]([O-])Cc3ncc(C)c(OC)c3C)nc2c1.COc1ccc2[n-]c([S+]([O-])Cc3ncc(C)c(OC)c3C)nc2c1.[Mg+2]
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?