Using C=CC(=O)O, CN(CCN)c1cccc(NC(=O)OC(C)(C)C)n1 to produce C=CC(=O)NCCN(C)c1cccc(NC(=O)OC(C)(C)C)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.