COC1=N[C@H](C(C)C)C(OC)=N[C@H]1Cc1ccc(C[C@@H]2N=C(OC)[C@@H](C(C)C)N=C2OC)s1
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?