CC(=O)OC1CC2C(C)(C)C(=O)C=C[C@]2(C)C2CC[C@]3(C)C(=CC(=O)OC3c3ccoc3)[C@]12C
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?