Cc1cccc(C(=O)Oc2ccccc2C2C[C@]3(C)CC(=O)NC3N2C(=O)c2cccc(C)c2)c1
Hydrogen bond acceptor: The atom, ion, or molecule component of a hydrogen bond which does not supply the bridging (shared) hydrogen atom. How many hydrogen bond acceptors does the molecule have?