CC(=O)OC[C@@H]1O[C@H](C/C=N\O[C@@H](C)c2cn([C@H]3COC[C@H]3O)nn2)C=C[C@@H]1OC(C)=O
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?