CCN(CC)CC(=O)N1c2ccccc2Oc2c(c(=O)n(C)c(=O)n2C)C1c1cccc([N+](=O)[O-])c1
Hydrogen bond acceptor: The atom, ion, or molecule component of a hydrogen bond which does not supply the bridging (shared) hydrogen atom. How many hydrogen bond acceptors does the molecule have?