Cc1ccccc1NC(=O)Cn1c(=O)n(-c2ccc(CC(=O)NCC3CCCO3)cc2)c(=O)c2ccccc21
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?