Cc1cccc(C)c1NC(=O)Cn1c(=O)n(Cc2ccco2)c(=O)c2ccc(C(=O)NC3CCCC3)cc21
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?