Using CCCC(CCC)n1nnc2c(Oc3c(Br)cc(C(C)(C)O)cc3OC)nc(C)nc21 to produce C=C(C)c1cc(Br)c(Oc2nc(C)nc3c2nnn3C(CCC)CCC)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.