Cc1cc(C(=O)COC(=O)c2ccc(N)c([N+](=O)[O-])c2)c(C)n1-c1ccc2c(c1)OCO2
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?