CC(=O)[C@H]1CC[C@H]2[C@@H]3CC=C4C[C@@H](OS(=O)(=O)[O-])CC[C@]4(C)[C@H]3CC[C@]12C.[Na+]
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?