COCC(=O)Nc1c(I)c(C(=O)NC[C@@H](O)CO)c(I)c(C(=O)N(C)C[C@@H](O)CO)c1I
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?