Using COC(=O)C(C)(C)COc1ccc(N(CCO[Si](C)(C)C(C)(C)C)C(=O)c2c(Cl)ncnc2Cl)cn1 to produce COC(=O)C(C)(C)COc1ccc(N(CCO)C(=O)c2c(Cl)ncnc2Cl)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.