Using CC(C)(C)[Si](C)(C)OCCCCn1c(Cn2c(=O)n(C3CC3)c3ccncc32)cc2cc(Br)ccc21 to produce O=c1n(Cc2cc3cc(Br)ccc3n2CCCCO)c2cnccc2n1C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.