CC(=O)O[C@H]1/C(=C/c2ccncc2)C[C@H]2[C@@H]3CC=C4C[C@@H](N5CCCC5)CC[C@]4(C)[C@H]3CC[C@@]21C
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?