CC[C@]12c3[nH]c4cc(CCC(=O)N(C)C)ccc4c3CCN1C(=O)[C@@H](CC(=O)NCCc1ccccn1)C[C@@H]2C(=O)N1CCN(C(=O)C2CC2)CC1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?