COc1cccc(NC(=O)c2sc3nc(C)c(C(=O)Nc4ccc(C)cc4C)c(-c4ccc(C)o4)c3c2N)c1
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?