COc1ccc(NS(=O)(=O)c2ccc3c(c2)[C@H]2C=CC[C@H]2[C@@H](c2ccc(C(=O)O)cc2)N3)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?