CCCNC(=O)OC[C@@H]1O[C@H](CCO/N=C(\C)CCN2CCCCc3nc(C)c(C)cc32)C=C[C@@H]1Oc1ccc(OC)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?