CCn1cc(C(=O)N2CCN(c3ccc(OC)cc3)CC2)c(=O)c2cc(S(=O)(=O)N3CCOCC3)ccc21
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?