Cc1ccc(NC(=O)C2C3C=CC4(O3)C2C(=O)N(CCN2CCOCC2)C4C(=O)NC2CCCCC2)cc1C
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?