Using O=c1[nH]c2c(OC3CN(C(c4ccccc4)c4ccccc4)C3)cccc2n1Cc1ccccc1 to produce O=c1[nH]c2c(OC3CNC3)cccc2n1Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.