COc1ccc(C(C(=O)NC2CCCC2)N(C(=O)c2snc(C(N)=O)c2N)C2CCCC2)cc1OC
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?