CCOC(=O)C1CCCN(C(=O)c2ccc(Cn3c(=S)[nH]c4cc(C(=O)OC)ccc4c3=O)cc2)C1
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?