CC(=O)O[C@H]1CC2C(C3CC[C@H](C(C)CCC(N)=O)[C@]31C)[C@H](OC(C)=O)C[C@@H]1CC3(CC[C@]21C)OOC1(CCC(C)CC1)OO3
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?