COc1ccc2[nH]c3c(c2c1)CCN1C(=O)C(CC(=O)NCCC2=CCCCC2)C[C@H](C(=O)N2CCCCC2)[C@@]31CCc1ccccc1
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?