COc1cc(OC)c2c(c1C(CCN1CCCCC1)c1ccc(N(C)C)cc1)OC(=O)CC2c1ccc(N(C)C)cc1
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?