COc1cc(OC)c(/C=C2\N=C(C)N(Nc3nnc(NN4C(=O)/C(=C/c5c(OC)cc(OC)cc5OC)N=C4C)c4ccccc34)C2=O)c(OC)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?