CN(C)C(=O)CCc1ccc2c3c([nH]c2c1)[C@]1(CCC2CCCC2)[C@@H](C(=O)N2CCOCC2)C[C@H](CC(=O)NCC24C[C@H]5C[C@@H](C2)C[C@@H](C4)C5)C(=O)N1CC3
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?