CC1=C2C(=O)C3C(CC=C4CC(OC5OC(O)C(O)C(O)C5CO)CCC43C)C2CCC12OC1CC(C)CNC1C2C
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?