COc1ccc2[nH]c3c(c2c1)CCN1C(=O)N([C@@H](C)C(=O)NCCc2ccc(OC)c(OC)c2)C(=O)[C@]31C
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?