COc1ccc2c(c1)CN([C@H](C)[C@@H]1CC[C@@H]3[C@H]4CC[C@H]5C[C@@H](O)CC[C@@]5(C)[C@H]4CC[C@]31C)CO2
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?