CCN(CC)c1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)OP(=O)(O)C(Br)(Br)P(=O)(O)O)[C@H](O)[C@H]1O
Hydrogen bond acceptor is the chemical compound which contains the lone electron pairs that participate in the hydrogen bond formation. How many hydrogen bond acceptors does the molecule contain?