COc1ccc2nc3cc(Cl)ccc3c(SCC(=O)Nc3ccccc3-c3ccccc3NC(=O)CSc3c4ccc(Cl)cc4nc4ccc(OC)cc34)c2c1
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?