O=C(COc1ccc(OCC(=O)N2C(=O)CC/C2=N\c2ccc(Cl)cc2)cc1)N1C(=O)CS/C1=N\c1ccc(Cl)cc1
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?