CCN(CC)C(=O)c1sc2c(c1C)c(=O)n(-c1ccc(C)c(C)c1)c(=O)n2Cc1cc(=O)n2ccccc2n1
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?