CCc1cc(Cc2cc(CC)c(NC(=O)C(=O)CC(=O)c3sc(-c4cccnc4)nc3C)c(CC)c2)cc(CC)c1NC(=O)C(=O)CC(=O)c1sc(-c2cccnc2)nc1C
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?