Using COC(=O)CNCCN(C)C(=O)OC(C)(C)C, Cc1cn(CC(=O)O)c(=O)[nH]c1=O to produce COC(=O)CN(CCN(C)C(=O)OC(C)(C)C)C(=O)Cn1cc(C)c(=O)[nH]c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.