Using O=C(OCc1cccc2c1Cc1ccccc1-2)ON1C(=O)CCC1=O, CC(C)(C)OC(=O)NCCN to produce CC(C)(C)OC(=O)NCCNC(=O)OCc1cccc2c1Cc1ccccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.