COc1cc2c(cc1OCCN1CCN(CCOc3cc4c(cc3OC)C(=O)N3CCC[C@H]3C=N4)CC1)N=C[C@@H]1CCCN1C2=O
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?