CCOC(=O)c1sc2c(c1OC(=O)c1ccc(OC)cc1)c(=O)n(-c1ccccc1)c(=S)n2-c1ccccc1
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?