CCOC(=O)N1CCN(S(=O)(=O)N2CCCC(C(=O)NCCc3ccc(OCC)c(OCC)c3)C2)CC1
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?