Cc1c2ccccc2c(C2C3C(=O)N(c4cccc5ccccc45)C(=O)C3ON2Cc2ccc(CC(N)=O)cc2)c2ccccc12
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?