COC(=O)C1=C(C)N=C(C)/C(=C(/O)OC)C1c1ccc(OC(=O)c2oc3ccccc3c2C)c(OC)c1
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?