c1c(CC2CCCC2)nnn1C[C@H]1CC[C@@H]([C@@H]2CC[C@H](Cn3cc(CC4CCCC4)nn3)O2)O1
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?