Using CCOC(=O)C1(NC(=O)c2cccc3c2NCCC3)Cc2ccccc2C1 to produce O=C(NC1(C(=O)O)Cc2ccccc2C1)c1cccc2c1NCCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.