CCOC(=O)CCC(NC(=O)c1ccc(/N=C/c2nc3cc(C(F)(F)F)ccc3nc2-c2ccccc2)cc1)C(=O)OCC
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?