CC(C)C[C@H]1CN([C@@H](Cc2ccc(O)cc2)CN2CCC[C@@H]2CN2C(=S)NC[C@@H]2Cc2ccccc2)C(=S)N1CCc1ccccc1
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?