COC(=O)/C=C(/C=C1/C(C#N)=C(N)N(c2ccc(Cl)cc2)C1(C)/C(=C/C(=O)OC)C(=O)OC)C(=O)OC
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?