CCOP1(=O)N/C(=N/C2=NC(C(F)(F)F)(C(F)(F)F)OC(C(F)(F)F)(C(F)(F)F)O2)N(C)C1(C)C
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?