Cc1ccc([C@@]2(C)CC/C(=N/N=C3\CC[C@](C)(c4ccc(C)c(C)c4)c4cc(C)c(C)cc43)c3cc(C)c(C)cc32)cc1C
Hydrogen bond acceptor is the chemical compound which contains the lone electron pairs that participate in the hydrogen bond formation. How many hydrogen bond acceptors does the molecule contain?