C#CC1(O)CCC2[C@@H]3CCc4cc(Oc5nc(F)nc(-c6c(C)c(C(=O)OCC)n7ccccc67)n5)ccc4C3CC[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?