Using CC(C)(C)[Si](C)(C)OC[C@@]1(C)CC(=S)NCCS1, CI to produce CSC1=NCCS[C@@](C)(CO[Si](C)(C)C(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.