Oc1ccc(C[C@H]2CNC(=S)N2CC2CCCN2C[C@H](Cc2ccc(O)cc2)N2C[C@H](Cc3ccccc3)N(CC3CCCCC3)C2=S)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?