COC(=O)c1cc2c3c(cc(NCCN)c2[nH]1)N(C(=O)c1cc2cc(OC)c(OC)c(OC)c2[nH]1)CC3CCl.Cl
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?