CN(CCCNC(=O)c1cn(C)c2c1ccc1cc(Cl)c(Cl)cc12)CCCNC(=O)c1cn(C)c2c1ccc1cc(Cl)c(Cl)cc12
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?