CCOC(=O)c1c(C)nc2sc3c(=O)n(-c4ccc(OC)cc4)nnc3c2c1-c1ccc(OC)cc1
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?