CCOC(=O)c1[nH]c(Cc2[nH]c(C(=O)OCC)c(C)c2CCC(=O)OC)c(CCC(=O)OC)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?