Cc1ccc2oc3c(c(=O)c2c1)C(c1ccc(OCC(N)=O)cc1)N(Cc1ccc2c(c1)OCO2)C3=O
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?