COC(=O)c1cc(NC2OCC(OC(C)=O)C(OC(C)=O)C2OC(C)=O)nc(SC)c1C(=O)OC
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?