CC(=O)OC1CC2C(C)(C)C(=O)C3OC3[C@]2(C)C2CC[C@@]3(C)C(c4ccoc4)OC(=O)C4OC43[C@]12C
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?