Using CCc1ccc(CCc2ccccc2OCCC2CCCCN2C(=O)OC(C)(C)C)cc1 to produce CCc1ccc(CCc2ccccc2OCCC2CCCCN2C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.