CCOC(=O)c1sc(NC(=O)CSc2nc3c(c(=O)n2-c2ccc(C)cc2)SCC3)c(C(=O)OCC)c1C
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?