The answer is 5 if u multiple
11.nicotinamid dinucleotid
12.nicotinamid dinucleotid phosphate
13.nicotinamid dinucleotid phosphate hydrogen
14.adenosine diphosphate
15.adenoside triphosphate
Because hydrogen bonds can be formed between the oxygen on one molecule and the hydrogen of another molecule; which are stronger bonds compared to the weaker dipole-dipole intermolecular bonding of ethane
242 g/mol...... hope it helps :)