CCOC(=O)N1CCC(NC(=O)c2ccc3c(c2)N(C)C(=O)/C(=C/c2cccc(OC)c2)S3)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?