CCC1(CC)C(=O)C2=C3C1[C@H](C(=O)OC)CC(C(=O)OC)C[C@H]3n1c(=O)n(-c3ccccc3)c(=O)n1[C@H]2C
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?