CCC1=C(OC(=O)N(CC)CC)N2C(=O)O/C(=N\CCOC)[C@]2(C)[C@H]2C1=CC[C@H]1C(=O)N(C)C(=O)[C@H]12
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?