Cc1c(C)c2cc(Cl)c(OCC(=O)N3C[C@@H]4C[C@H](C3)Cn3c4cccc3=O)cc2oc1=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?