COC1/C=C(C)/C=C/C(C)/C=C/C(=O)OC(/C(C)=C/C=C(\C)CNC(=O)[C@H](CO)NC=O)C(C)/C=C/C=C/C(OC)CC/C=C(C)/C=C/C1
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?