O=C1c2ccccc2-c2c1c(-c1ccccc1)c1n2C2(C(=O)c3ccccc3C2=O)C2C(=O)N(c3ccccc3)C(=O)C12
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?