COc1cc(/C=C2\N=C(c3ccccc3)N(c3ccc(C(=O)c4ccccc4)cc3N3C(=O)/C(=C/c4cc(OC)c(OC)c(OC)c4)N=C3c3ccccc3)C2=O)cc(OC)c1OC
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?