Cn1c(N)c(C(=O)COC(=O)[C@H](Cc2ccccc2)N2C(=O)c3ccccc3C2=O)c(=O)n(C)c1=O
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?