CCN(C(=O)c1nn(-c2ccc(OC)c(Cl)c2)c(=O)c2c1c1ccccc1n2C)c1cc(OC)ccc1OC
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?