CCC(C)C1NC(=O)C2CCCN2C(=O)CNC(=O)C(C)NC(=O)C(Cc2ccccc2)NC(=O)C(C(C)C)NC1=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?