CC1CC2C3CCC4=CC(=O)C=C[C@]4(C)[C@@]3(Cl)C(O)C[C@]2(C)C1(OC(=O)c1ccco1)C(=O)CCl
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?