Using O=Cc1ccccc1, Cc1nc2ccccc2c(NCCC2CCN(C(=O)OC(C)(C)C)CC2)c1N to produce Cc1nc2ccccc2c2c1nc(-c1ccccc1)n2CCC1CCN(C(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.