COc1ccc(C2N(c3ccc(C)c(N=C=O)c3)C(=O)N3C(c4ccc(OC)cc4)N(c4ccc(C)c(N=C=O)c4)C(=O)N23)cc1
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?