COc1ccc(-n2c(N)c(C(=O)Nc3c(C)n(C)n(-c4ccccc4)c3=O)c3nc4ccccc4nc32)cc1
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?