CCCCCCCCCCCCCCCCCCNc1ccn(C2OC(COP(=O)(O)OCC3OC(n4ccc(N)nc4=O)C(O)C3O)C(O)C2O)c(=O)n1
The donor in a hydrogen bond is usually a strongly electronegative atom such as N, O, or F that is covalently bonded to a hydrogen bond. How many hydrogen bond donors does the molecule have?