CC(=O)O.O=C(CCN1CCCCC1CCO)Nc1ccc2c(c1)C(=O)c1ccc(NC(=O)CCN3CCCCC3CCO)cc1C2=O
Hydrogen bond acceptor is the chemical compound which contains the lone electron pairs that participate in the hydrogen bond formation. How many hydrogen bond acceptors does the molecule contain?