CC1=C2C(=O)C3C(CC=C4CC(OC5OC(O)C(O)C(O)C5CO)CCC43C)C2CCC12OC1CC(C)CNC1C2C
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?