Using O=C(NC1CCN(Cc2ccccc2)CC1)C(CCCc1ccccc1)CCCc1ccccc1 to produce O=C(NC1CCNCC1)C(CCCc1ccccc1)CCCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.