CC1(C)Cc2c(c(N3CCCC3)nc3sc4c(N5CCN(CCO)CC5)ncnc4c23)CO1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?