O=C1c2ccc3c4ccc5c6c(ccc(c7ccc(c2c37)C(=O)N1CCN1CCCCC1)c64)C(=O)N(CCN1CCCCC1)C5=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?