COC(=O)c1ccccc1NC(=O)Cn1c(=O)n(CCCC(=O)NCCc2ccc(OC)c(OC)c2)c(=O)c2ccccc21
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?