Cc1cc(OCC(=O)N[C@@H](Cc2c[nH]c3ccccc23)C(=O)O)c2c(C)c(C)c(=O)oc2c1
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?