NC(=S)N/N=C(\C(=O)Nc1ccc(Cl)c(Cl)c1)C1=NN(c2ccccc2)C(c2cccc([N+](=O)[O-])c2)CC1=O
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?