Using CC(=O)c1ncc2c(ccn2COCC[Si](C)(C)C)n1, CCN to produce CCNC(C)c1ncc2c(ccn2COCC[Si](C)(C)C)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.