O=C1[C@H]2CC[C@@H]3/C(=N\OCc4ccccc4)C[C@@H](O)[C@@H](O)[C@@H]3[C@@H]2C(=O)N1Cc1ccccc1
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?