Using CNC[C@H](CC(C)(C)OC)NC(=O)OC(C)(C)C, C[Si](C)(C)CCOC(=O)ON1C(=O)CCC1=O to produce COC(C)(C)C[C@@H](CN(C)C(=O)OCC[Si](C)(C)C)NC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.