COCCNC(=O)c1cc2c(c(-c3cccc(-c4cc5ccccc5o4)c3)n1)[C@H](CCO)N([S+]([O-])C(C)(C)C)C2
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?