COc1ccc2c(ccc3c(C(=O)NCCCN(C)CCCNC(=O)c4cn(C)c5c4ccc4cc(OC)ccc45)cn(C)c32)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?