CCCC(C)(O)C1CC23C=CC1(OC)[C@@H]1Oc4c(OC)ccc5c4[C@@]12CCN(C)[C@@H]3C5
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?