CSc1ccc(/C=C2\N=C(c3ccccc3)N(c3ccc(C(=O)c4ccccc4)cc3N3C(=O)/C(=C\c4ccc(SC)cc4)N=C3c3ccccc3)C2=O)cc1
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?