COc1cc(C(CCN2CCCC(C)C2)c2c(OC)cc(OC)c3c2OC(=O)CC3c2ccc(N(C)C)cc2)cc(OC)c1OC
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?