Cc1c(/C=N\NC(=S)N2CCN(C(=S)N/N=C\c3c(C)n(C)n(-c4ccccc4)c3=O)CC2)c(=O)n(-c2ccccc2)n1C
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?