COc1ccc2c(c1)c1c(c(=O)n(-c3cccc(C)c3)c(=O)n1Cc1cccc(Cl)c1)n2C
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?