Cc1c(Cc2ccccc2)c(=O)oc2c(C)c(OC(C)C(=O)NC[C@H]3CC[C@H](C(=O)O)CC3)ccc12
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?