CNC(=O)OC1/C(C)=C\C(C)C(O)C(OC)CC(C)CC2=C(OC)C(=O)C=C(C2=O)N(C)C(=O)/C(C)=C/C=C\C1OC
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?