COc1ccc([C@H]2[C@H](C(=O)OC(C)(C)C)N3N=Cc4ccccc4C3C23C(=O)c2ccccc2C3=O)c(OC)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?