COc1cccc(-c2ccc3c(c2)O[C@H](CN(C)C(=O)c2ccccc2F)[C@H](C)CN([C@H](C)CO)S3(=O)=O)c1
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?