Using O=C(NCC1(N2CCN(C3CC3)CC2)CCN(Cc2ccccc2)CC1)C(F)(F)F to produce O=C(NCC1(N2CCN(C3CC3)CC2)CCNCC1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.