Cc1ccc(S(=O)(=O)N[C@H](C(=O)OCC(=O)NC(=O)Nc2ccc3c(c2)OCCO3)C(C)C)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?