CCOC(=O)C1=C(NC(=O)c2ccc(OC)c(S(=O)(=O)N3CCCCC3C)c2)Nc2ccccc2N=C1CC
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?