Using CC(COCCN1C(=O)c2ccccc2C1=O)(COCCN1C(=O)c2ccccc2C1=O)COCCN1C(=O)c2ccccc2C1=O to produce CC(COCCN)(COCCN)COCCN, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.