Using CC1CN(CCCC2c3ccccc3CCc3ccccc32)CCC12OC(=O)c1ccccc12 to produce CC1CN(CCCC2c3ccccc3CCc3ccccc32)CCC12OCc1ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.