CC#CCN1c2ccccc2[C@]23C[C@@H](C(=O)OC)NC2=NC(C(=O)OC)=C(C(=O)OC)[C@H]13
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?