CCOC(=O)NC(=O)c1cn(CCN2CCN(C(=O)CCCCCCCCCCNc3ncnc4[nH]cnc34)CC2)c(=O)[nH]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?