COC(=O)c1ccc2c(=O)n(CC3CCCO3)c(SCC(=O)NCCc3ccc(S(N)(=O)=O)cc3)nc2c1
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?