c1ccc(C2=Nn3c(CCCCCCCCc4nnc5n4N=C(c4ccccc4)CS5)nnc3SC2)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?