CCCCC/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)O[C@H](COCCCCCCCCCCCCCCCC)COP(=O)([O-])OCC[N+](C)(C)C
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?