Using CCC(=O)N(C)OC, CC[Si](CC)(CC)OCc1c(Br)sc2c(-c3cccnc3)ncn12 to produce CCC(=O)c1sc2c(-c3cccnc3)ncn2c1CO[Si](CC)(CC)CC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.