Using O=Cc1ccoc1, CC1(C)CCC(c2ccccc2N2CCNCC2)CC1 to produce CC1(C)CCC(c2ccccc2N2CCN(Cc3ccoc3)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.