COc1cc(OC)cc(C(=O)NCC(=O)NCCN2C(=O)S/C(=C\c3ccc4c(c3)OCO4)C2=O)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?