O=c1/c(=C/c2ccc(-c3ccc(Cl)cc3Cl)o2)sc2n1[C@@H](c1ccc3c(c1)OCO3)C=C(c1cc(F)c(Cl)cc1Cl)N=2
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?