O=C(c1ccc2c(c1)OCO2)N1CCC2(CC1)Oc1ccc(Cl)cc1C(=O)C21CC(c2cccnc2)=NO1
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?