CN1CCC23c4c5ccc(Oc6nnnn6-c6ccccc6)c4OC2c2[nH]c4ccccc4c2CC3(O)C1C5
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?