COc1ccccc1-c1nnc(SCC(=O)Nc2oc(C)c3c(C)nnc(O)c23)n1C
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?